Using QLever as LDH triplestore fails during bootstrap import (HTTP 400 while loading default datasets)

[okikio]

TL;DR - LDH bootstrap fails against QLever: LDH posts TriG dataset to a:quadStore, but QLever only accepts SPARQL Update or graph-scoped GSP (400 “application/trig not supported”)

What I’m trying to do

Run LinkedDataHub (LDH) via the Docker Compose example, but use QLever as the backing store instead of the bundled Fuseki instances.

I configured the root admin and end-user services in config/system.trig to point at QLever (running in Kubernetes, port-forwarded to my laptop). From Docker, it’s reachable at:

• http://host.docker.internal:7001

Note

I'm using k8s but that's just because I've already indexed a bunch of data into the graph database on k8s so it was just more convenient to portforward from k8s. The same general result should occur when just running Qlever locally on Docker.

My end goal is to use LDH as a CMS to edit the data indexed on Qlever and to host it on K8s in a small VPS.

What happened

LDH reaches the QLever URL, then fails during bootstrap when it tries to load the default datasets:

• LDH logs: “Loading end-user dataset into the triplestore...”
• then curl: (22) ... 400
• container exits with code 22

Startup log excerpt

### Quad store URL of the root end-user service: [http://host.docker.internal:7001/](http://host.docker.internal:7001/) or [http://localhost:7001/](http://localhost:7001/) (due to port forwarding)

### Quad store URL of the root admin service: [http://host.docker.internal:7001/](http://host.docker.internal:7001/) or [http://localhost:7001/](http://localhost:7001/) (due to port forwarding)

### Waiting for [http://host.docker.internal:7001/](http://host.docker.internal:7001/)...

### URL [http://host.docker.internal:7001/](http://host.docker.internal:7001/) responded

### Loading end-user dataset into the triplestore...

curl: (22) The requested URL returned error: 400
linkeddatahub-1 exited with code 22

Sanity checks: what works with QLever

1) SPARQL query works

From inside the LDH container, SPARQL query works:

curl -s \
  -H 'Content-Type: application/sparql-query' \
  -H 'Accept: application/sparql-results+json' \
  --data 'SELECT * WHERE { ?s ?p ?o } LIMIT 1' \
  'http://host.docker.internal:7001'

2) Graph Store Protocol (single graph) write works with token + ?graph=

export QLEVER_TOKEN="…"

printf '<urn:s> <urn:p> "o" .\n' > /tmp/one.ttl

curl -i -X PUT \
  -H "Content-Type: text/turtle" \
  -H "Authorization: Bearer $QLEVER_TOKEN" \
  --data-binary @/tmp/one.ttl \
  "http://host.docker.internal:7001?graph=urn:test"

This returns HTTP/1.1 200 OK.

3) SPARQL Update write works with token

export QLEVER_TOKEN="…"

curl -i -X POST \
  -H "Content-Type: application/sparql-update" \
  -H "Authorization: Bearer $QLEVER_TOKEN" \
  --data 'INSERT DATA { GRAPH <urn:test> { <urn:s> <urn:p> "o" } }' \
  "http://host.docker.internal:7001"

This returns HTTP/1.1 200 OK.

Repro: why bootstrap fails (QLever rejects dataset-level TriG POST)

LDH bootstrap appears to be attempting a dataset-level upload (TriG). Reproducing directly:

curl -i -X POST \
  -H "Content-Type: application/trig" \
  --data-binary @./platform/datasets/end-user.trig \
  "http://host.docker.internal:7001/"

Response from QLever:

HTTP/1.1 400 Bad Request
Content-Type: text/plain

POST request with content type "application/trig" not supported
(must be Query/Update with content type
"application/x-www-form-urlencoded",
"application/sparql-query" or "application/sparql-update"
or a valid graph store protocol POST request)

So:

• QLever accepts SPARQL Query/Update at this endpoint
• QLever accepts Graph Store Protocol when graph-scoped (e.g., ?graph=...)
• QLever rejects dataset-level TriG POST (Content-Type: application/trig) at /

My system.trig change (key parts)

I changed both services to point to QLever (admin and end-user):

<urn:linkeddatahub:services/admin>
{
  <urn:linkeddatahub:services/admin> a sd:Service ;
    dct:title "LinkedDataHub admin service (QLever)" ;
    sd:supportedLanguage sd:SPARQL11Query, sd:SPARQL11Update ;
    sd:endpoint <http://host.docker.internal:7001/> ;
    a:graphStore <http://host.docker.internal:7001/> ;
    a:quadStore <http://host.docker.internal:7001/> ;
    lapp:backendProxy <http://host.docker.internal:7001/> .
}

<urn:linkeddatahub:services/end-user>
{
  <urn:linkeddatahub:services/end-user> a sd:Service ;
    dct:title "LinkedDataHub service (QLever)" ;
    sd:supportedLanguage sd:SPARQL11Query, sd:SPARQL11Update ;
    sd:endpoint <http://host.docker.internal:7001/> ;
    a:graphStore <http://host.docker.internal:7001/> ;
    a:quadStore <http://host.docker.internal:7001/> ;
    lapp:backendProxy <http://host.docker.internal:7001/> .
}

Tip

You can repro Qlever using https://github.com/okikio/sparql-client/tree/main/infra/qlever, holds both docker and k8s kustomize yaml files for replicating the exact behaviours I'm hitting.

Expected behavior

One of these outcomes (any would be fine, but right now the expectation isn’t clear):

1. LDH boots successfully against a backend that supports SPARQL Query/Update + Graph Store Protocol (GSP), even if it does NOT support dataset-level TriG uploads

OR

2. LDH docs clearly state that a:quadStore requires dataset-level RDF Dataset CRUD (e.g., POST/PUT of TriG / N-Quads), and list compatible backends / required endpoints

OR

3. LDH can be configured to perform bootstrap imports via:

   • SPARQL Update (INSERT DATA { GRAPH ... }), or
   • per-graph GSP requests (PUT/POST with ?graph=...)
     instead of dataset-level TriG POST/PUT to a:quadStore

Hypothesis: a:quadStore semantics mismatch (dataset CRUD vs graph CRUD)

From AtomGraph Core API docs, QuadStore is described as a Graph Store Protocol interface extended to support quads, with dataset-level methods like post(Dataset) / put(Dataset).

LDH bootstrap likely uses a:quadStore as a dataset-level endpoint (POST/PUT an RDF Dataset in TriG) to load default datasets.

However, QLever’s HTTP interface (as confirmed by the 400 response above) does not accept POST application/trig as a dataset-level operation at /. It only accepts:

• SPARQL Query/Update content types, or
• graph-scoped GSP requests (e.g., with ?graph=...)

Additionally, QLever write operations require an access token (Bearer header), which LDH bootstrap isn’t providing and from what I understand there is no currently supported approach that would allow including Bearer Tokens as part of the Header of a Update request.

A couple questions

1. What exact URLs/paths should be used for:

   • SPARQL endpoint (sd:endpoint)
   • Graph Store endpoint (a:graphStore)
   • Quad store endpoint (a:quadStore)
     for a non-Fuseki backend?

2. Does LDH require a:quadStore to support dataset-level CRUD (POST/PUT an RDF Dataset payload like TriG)?

   • If yes: is there a list of supported quad-store implementations, or an adapter pattern?

3. Can LDH bootstrap/import be configured to use:

   • SPARQL Update for initial dataset loading, or
   • per-graph Graph Store Protocol calls
     instead of dataset-level TriG upload?

4. Is there a supported way to pass backend auth credentials for bootstrap imports (e.g., Bearer token) so stores like QLever can be used safely?

Possible next steps...

Any of the following could potentially make QLever workable:

• A documented configuration option that makes LDH import via SPARQL Update (INSERT DATA { GRAPH ... }) rather than dataset-level POST application/trig
• A mode that splits TriG into named graphs and imports them via graph-scoped GSP (PUT/POST ?graph=...)
• A pluggable “quad store adapter” layer (LDH speaks QuadStore; adapter translates to backend-specific write APIs), if one exists, and maybe some direction on the best approach to creating one if possible (I'm still fairly new to the RDF/SPARQL scene).
• Clear docs stating: a:quadStore requires dataset-level TriG/N-Quads CRUD and QLever is not compatible without an adapter

Environment

• LinkedDataHub via Docker Compose example setup
• QLever in Kubernetes, port-forwarded to localhost:7001
• Docker compose which uses extra_hosts: host.docker.internal:host-gateway under the linkeddatahub service
• Host platform: M1 Macbook (some platform mismatch warnings in Docker, but the core issue is a protocol mismatch: QLever returns 400 for TriG dataset POST)

[namedgraph]

Hi @okikio - thanks for the report!
I understand the problem now - I encountered the same issue while testing Tentris and actually had a fix using graph-scoped GSP :)
I have now applied it on the develop branch: if a:quadStore is not provided, then the entrypoint falls back to using a:graphStore and standard GSP. If you could try it out it would be great.
Naturally the init imports take longer graph by graph but since the system datasets are not that large I think it's reasonable.

[namedgraph]

BTW http://host.docker.internal should not be necessary - try using internal Docker service hostnames - assuming you can run QLever as part of the docker-compose setup.

[okikio]

I'm portforwarding currently, so there is no internal Docker service hostnames 😅.

I tried on the develop branch, it's able to get a response from Qlever but then errors out

linkeddatahub-1     | 
linkeddatahub-1     | ### Reading secretary metadata from existing file: /var/linkeddatahub/based-datasets/root-secretary.nq
linkeddatahub-1     | 
linkeddatahub-1     | ### Reading context dataset from a local file: /var/linkeddatahub/datasets/dataspaces.trig
linkeddatahub-1     | 
linkeddatahub-1     | ### Reading services dataset from a local file: /var/linkeddatahub/datasets/system.trig
linkeddatahub-1     | 09:46:48 INFO  riot            :: File: /var/linkeddatahub/datasets/dataspaces.trig
linkeddatahub-1     | 09:46:49 INFO  riot            :: File: /var/linkeddatahub/datasets/system.trig
linkeddatahub-1     | 
linkeddatahub-1     | ### Processing app: urn:linkeddatahub:apps/admin (type: https://w3id.org/atomgraph/linkeddatahub/apps#AdminApplication, origin: https://admin.localhost:4443)
linkeddatahub-1     | 
linkeddatahub-1     | ### Graph store URL (GSP fallback): http://host.docker.internal:7001/
linkeddatahub-1     | 
linkeddatahub-1     | ### Loading datasets for app: urn:linkeddatahub:apps/admin
linkeddatahub-1     | 
linkeddatahub-1     | ### Reading admin dataset from a local file: /var/linkeddatahub/datasets/admin.trig
linkeddatahub-1     | 
linkeddatahub-1     | ### Waiting for http://host.docker.internal:7001/...
linkeddatahub-1     | 
linkeddatahub-1     | ### URL http://host.docker.internal:7001/ responded
linkeddatahub-1     | 
linkeddatahub-1     | ### Loading admin dataset into the triplestore...
linkeddatahub-1     |   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
linkeddatahub-1     |                                  Dload  Upload   Total   Spent    Left  Speed
 84  1914    0     0  100  1612      0  11535 --:--:-- --:--:-- --:--:-- 11514
linkeddatahub-1     | curl: (22) The requested URL returned error: 500
linkeddatahub-1 exited with code 22
Container linkeddatahub-linkeddatahub-1 Error dependency linkeddatahub failed to start
dependency failed to start: container linkeddatahub-linkeddatahub-1 exited (22)

The config/system.trig I used on the develop branch is

@prefix lapp:	<https://w3id.org/atomgraph/linkeddatahub/apps#> .
@prefix a:	    <https://w3id.org/atomgraph/core#> .
@prefix rdf:	<http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix ldt:	<https://www.w3.org/ns/ldt#> .
@prefix sd:	    <http://www.w3.org/ns/sparql-service-description#> .
@prefix dct:	<http://purl.org/dc/terms/> .

### internal deployment wiring - not for public sharing ###
### maps apps to their backend SPARQL services, and assigns admin/end-user roles ###

# root admin - type + service binding

<urn:linkeddatahub:apps/admin>
{
    <urn:linkeddatahub:apps/admin> a lapp:AdminApplication ;
        ldt:service <urn:linkeddatahub:services/admin> .
}

# root admin - service description

<urn:linkeddatahub:services/admin>
{
    <urn:linkeddatahub:services/admin> a sd:Service ;
        dct:title "LinkedDataHub admin service" ;
        sd:supportedLanguage sd:SPARQL11Query, sd:SPARQL11Update ;
        sd:endpoint <http://host.docker.internal:7001/> ;
        a:graphStore <http://host.docker.internal:7001/> .
        # a:quadStore <http://host.docker.internal:7001/> .
}

# root end-user - type + service binding

<urn:linkeddatahub:apps/end-user>
{
    <urn:linkeddatahub:apps/end-user> a lapp:EndUserApplication ;
        ldt:service <urn:linkeddatahub:services/end-user> .
}

# root end-user - service description

<urn:linkeddatahub:services/end-user>
{
    <urn:linkeddatahub:services/end-user> a sd:Service ;
        dct:title "LinkedDataHub service" ;
        sd:supportedLanguage sd:SPARQL11Query, sd:SPARQL11Update ;
        sd:endpoint <http://host.docker.internal:7001/> ;
        a:graphStore <http://host.docker.internal:7001/> ;
        # a:quadStore <http://host.docker.internal:7001/> .
}

# northwind-traders admin - type + service binding (reuses root admin service)

<urn:linkeddatahub:apps/northwind-traders/admin>
{
    <urn:linkeddatahub:apps/northwind-traders/admin> a lapp:AdminApplication ;
        ldt:service <urn:linkeddatahub:services/admin> .
}

# northwind-traders end-user - type + service binding (reuses root end-user service)

<urn:linkeddatahub:apps/northwind-traders/end-user>
{
    <urn:linkeddatahub:apps/northwind-traders/end-user> a lapp:EndUserApplication ;
        ldt:service <urn:linkeddatahub:services/end-user> .
}

Could the issue be the docker compose up --build boot up process maybe?

[namedgraph]

From the logs it looks like http://host.docker.internal:7001/ responded so the networking should be fine.
Maybe you can see in the QLever logs whether the GSP requests are reaching it and/or what is causing the 500 error?

[okikio]

ohhhh its the access token, if I'm correct during boot LDH tries to load the admin dataset into Qlever via the Graph Scoped GSP but Qlever only allows that if the auth token is specified. Is there someway to tell LDH to set a Authorization Header for Bearer Tokens?

[namedgraph]

It's getting hairier 😅 Can you point me to the QLever's docs on this?
I need to think about supporting this in a generic way...

[namedgraph]

Implemented bearer token support on develop.

1. Uncomment this in docker-compose.yml:

  # credentials:
  #   file: ./secrets/credentials.trig

2. create the credentials file as a Docker secret, e.g.

@prefix a:   <https://w3id.org/atomgraph/core#> .

### This file is NOT committed to git (/secrets is gitignored)         ###

<urn:linkeddatahub:services/end-user>
{
    <urn:linkeddatahub:services/end-user> a:authToken "your-bearer-token" .
}

<urn:linkeddatahub:services/admin>
{
    <urn:linkeddatahub:services/admin> a:authToken "your-bearer-token" .
}

[okikio]

sorry fell asleep while looking for docs on the bearer token, they don't explicitly have docs laying out what's going on with the Bearer Token's but I did use DeepWiki to create a semi-doc on it https://deepwiki.com/search/explain-qlever-bearer-token-in_df28e184-ee76-47ac-98a9-98f5e9053627?mode=deep

[namedgraph]

@okikio OK looks like it's the standard Authorization: Bearer header so what I provided above should work 🤞
Keep in mind you're the first to test this 😅

[okikio]

Living on the bleeding edge

[okikio]

took me a little bit, but it looks like it's loading the datasets, it's not done yet, but at least that's progress...

[okikio]

i did get a fairly interesting error, it seems like something to be concerned about

initially it was just a one-off but it actually seems to cause LDH to crash

[namedgraph]

Looks like the entrypoint is working correctly and is importing the data.

The riot error [line: 1, col: 1] is an RDF parsing error. It looks like some Error message is returned where RDF was excpected.

Can you trace the the log for the thread where the error occurs (e.g. http-nio-7070-exec-3) some lines back? So that we can see the full request/response.

[okikio]

here are the logs

linkeddatahub-1     | 
linkeddatahub-1     | ### Waiting for http://host.docker.internal:7001/...
linkeddatahub-1     | 
linkeddatahub-1     | ### URL http://host.docker.internal:7001/ responded
linkeddatahub-1     | 
linkeddatahub-1     | ### Waiting for http://host.docker.internal:7001/...
linkeddatahub-1     | 
linkeddatahub-1     | ### URL http://host.docker.internal:7001/ responded
linkeddatahub-1     | 19-Feb-2026 19:17:44.386 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version name:   Apache Tomcat/10.1.46
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server built:          Sep 8 2025 14:26:21 UTC
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Server version number: 10.1.46.0
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Name:               Linux
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log OS Version:            6.12.68-linuxkit
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Architecture:          aarch64
linkeddatahub-1     | 19-Feb-2026 19:17:44.388 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Java Home:             /opt/java/openjdk
linkeddatahub-1     | 19-Feb-2026 19:17:44.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Version:           17.0.16+8
linkeddatahub-1     | 19-Feb-2026 19:17:44.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log JVM Vendor:            Eclipse Adoptium
linkeddatahub-1     | 19-Feb-2026 19:17:44.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_BASE:         /usr/local/tomcat
linkeddatahub-1     | 19-Feb-2026 19:17:44.389 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log CATALINA_HOME:         /usr/local/tomcat
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.config.file=/usr/local/tomcat/conf/logging.properties
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djdk.tls.ephemeralDHKeySize=2048
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.protocol.handler.pkgs=org.apache.catalina.webresources
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dsun.io.useCanonCaches=false
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.catalina.security.SecurityListener.UMASK=0027
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.lang.reflect=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.396 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.io=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.util=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.base/java.util.concurrent=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -XX:+UseContainerSupport
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -XX:MaxRAMPercentage=75
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: --add-exports=java.base/sun.security.tools.keytool=ALL-UNNAMED
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Duser.timezone=Europe/Copenhagen
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dorg.apache.tomcat.util.buf.UDecoder.ALLOW_ENCODED_SLASH=true
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.base=/usr/local/tomcat
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Dcatalina.home=/usr/local/tomcat
linkeddatahub-1     | 19-Feb-2026 19:17:44.397 INFO [main] org.apache.catalina.startup.VersionLoggerListener.log Command line argument: -Djava.io.tmpdir=/usr/local/tomcat/temp
linkeddatahub-1     | 19-Feb-2026 19:17:44.401 INFO [main] org.apache.catalina.core.AprLifecycleListener.lifecycleEvent Loaded Apache Tomcat Native library [2.0.9] using APR version [1.7.2].
linkeddatahub-1     | 19-Feb-2026 19:17:44.403 INFO [main] org.apache.catalina.core.AprLifecycleListener.initializeSSL OpenSSL successfully initialized [OpenSSL 3.0.13 30 Jan 2024]
linkeddatahub-1     | 19-Feb-2026 19:17:44.538 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-7070"]
linkeddatahub-1     | 19-Feb-2026 19:17:44.549 INFO [main] org.apache.catalina.startup.Catalina.load Server initialization in [303] milliseconds
linkeddatahub-1     | 19-Feb-2026 19:17:44.573 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service [Catalina]
linkeddatahub-1     | 19-Feb-2026 19:17:44.573 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet engine: [Apache Tomcat/10.1.46]
linkeddatahub-1     | 19-Feb-2026 19:17:44.578 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deploying deployment descriptor [/usr/local/tomcat/conf/Catalina/localhost/ROOT.xml]
linkeddatahub-1     | 19-Feb-2026 19:17:44.584 WARNING [main] org.apache.catalina.startup.HostConfig.deployDescriptor The path attribute with value [] in deployment descriptor [/usr/local/tomcat/conf/Catalina/localhost/ROOT.xml] has been ignored
linkeddatahub-1     | 19-Feb-2026 19:17:45.956 INFO [main] org.apache.jasper.servlet.TldScanner.scanJars At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging for this logger for a complete list of JARs that were scanned but no TLDs were found in them. Skipping unneeded JARs during scanning can improve startup time and JSP compilation time.
linkeddatahub-1     | 19:17:46,077 [main] DEBUG StreamManager:175 - Found: location-mapping.ttl (ClassLoaderLocator)
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/sp# => etc/sp.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: https://packages.linkeddatahub.com/skos/ => com/linkeddatahub/packages/skos/package.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: https://www.w3.org/ns/ldt/core/domain# => com/atomgraph/linkeddatahub/c.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/spin => etc/spin.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: https://www.w3.org/ns/ldt# => com/atomgraph/linkeddatahub/ldt.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/spl# => etc/spl.spin.ttl
linkeddatahub-1     | 19:17:46,256 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/spl => etc/spl.spin.ttl
linkeddatahub-1     | 19:17:46,257 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://rdfs.org/ns/void# => com/atomgraph/linkeddatahub/void.owl
linkeddatahub-1     | 19:17:46,257 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/spin# => etc/spin.ttl
linkeddatahub-1     | 19:17:46,257 [main] DEBUG JenaIOEnvironment:111 - Mapping: https://www.w3.org/ns/ldt/document-hierarchy# => com/atomgraph/linkeddatahub/dh.ttl
linkeddatahub-1     | 19:17:46,257 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://spinrdf.org/sp => etc/sp.ttl
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://www.w3.org/2011/http-statusCodes# => com/atomgraph/linkeddatahub/http-statusCodes.rdf
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: https://raw.githubusercontent.com/AtomGraph/LinkedDataHub-Apps/refs/heads/develop/packages/skos/ns.ttl => com/linkeddatahub/packages/skos/ns.ttl
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://www.w3.org/ns/sparql-service-description# => com/atomgraph/linkeddatahub/sparql-service.owl
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://rdfs.org/sioc/ns# => com/atomgraph/linkeddatahub/sioc.owl
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://www.w3.org/2011/http# => com/atomgraph/linkeddatahub/http.owl
linkeddatahub-1     | 19:17:46,258 [main] DEBUG JenaIOEnvironment:111 - Mapping: http://xmlns.com/foaf/0.1/ => com/atomgraph/linkeddatahub/foaf.owl
linkeddatahub-1     | 19:17:46,285 [main] DEBUG EMailListener:48 - com.atomgraph.linkeddatahub.listener.EMailListener initialized with a pool of 10 threads
linkeddatahub-1     | 19:17:46,458 [main] DEBUG Application:234 - Resource paths used to load Source: [/static/, /META-INF/, /uploads/, /WEB-INF/, /sitemap.xml] from filename: static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/layout.xsl
linkeddatahub-1     | 19:17:46,458 [main] DEBUG Application:238 - XSLT stylesheet URI: file:/usr/local/tomcat/webapps/ROOT/static/com/atomgraph/linkeddatahub/xsl/bootstrap/2.3.2/layout.xsl
linkeddatahub-1     | 19:17:46,571 [main] DEBUG Application:637 - SAXParserFactory class: com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl
linkeddatahub-1     | 19:17:46,571 [main] DEBUG Application:638 - XMLReader class: com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser
linkeddatahub-1     | 19:17:46,707 [main] DEBUG Application:1197 - Loading Model from dataset: /WEB-INF/classes/com/atomgraph/linkeddatahub/system.nq
linkeddatahub-1     | 19:17:47,980 [main] DEBUG JSONGRDDLFilter:76 - Compiled GRDDL stylesheet from /com/atomgraph/linkeddatahub/xsl/grddl/youtube.xsl for YouTubeGRDDLFilter
linkeddatahub-1     | 19-Feb-2026 19:17:48.209 INFO [main] org.apache.catalina.startup.HostConfig.deployDescriptor Deployment of deployment descriptor [/usr/local/tomcat/conf/Catalina/localhost/ROOT.xml] has finished in [3,631] ms
linkeddatahub-1     | 19-Feb-2026 19:17:48.212 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-7070"]
linkeddatahub-1     | 19-Feb-2026 19:17:48.218 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in [3669] milliseconds
linkeddatahub-1     | 19:18:04,910 [http-nio-7070-exec-1] DEBUG ApplicationFilter:139 - Request URI <https://localhost:4443/ns> has not matched any lapp:Dataset
linkeddatahub-1     | 19:18:04,913 [http-nio-7070-exec-1] DEBUG OntologyFilter:153 - Started loading ontology with URI 'https://localhost:4443/ns#' from the admin dataset
linkeddatahub-1     | 19:18:05,005 [http-nio-7070-exec-1] DEBUG RequestAddCookies:123 - CookieSpec selected: default
linkeddatahub-1     | 19:18:05,009 [http-nio-7070-exec-1] DEBUG RequestAuthCache:77 - Auth cache not set in the context
linkeddatahub-1     | 19:18:05,010 [http-nio-7070-exec-1] DEBUG Application$16:267 - Connection request: [route: {}->http://varnish-admin:80][total available: 0; route allocated: 0 of 20; total allocated: 0 of 40]
linkeddatahub-1     | 19:18:05,015 [http-nio-7070-exec-1] DEBUG Application$16:312 - Connection leased: [id: 0][route: {}->http://varnish-admin:80][total available: 0; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:18:05,016 [http-nio-7070-exec-1] DEBUG MainClientExec:234 - Opening connection {}->http://varnish-admin:80
linkeddatahub-1     | 19:18:05,018 [http-nio-7070-exec-1] DEBUG DefaultHttpClientConnectionOperator:139 - Connecting to varnish-admin/172.19.0.8:80
linkeddatahub-1     | 19:18:05,019 [http-nio-7070-exec-1] DEBUG DefaultHttpClientConnectionOperator:146 - Connection established 172.19.0.5:43024<->172.19.0.8:80
linkeddatahub-1     | 19:18:05,019 [http-nio-7070-exec-1] DEBUG MainClientExec:255 - Executing request GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:18:05,019 [http-nio-7070-exec-1] DEBUG MainClientExec:260 - Target auth state: UNCHALLENGED
linkeddatahub-1     | 19:18:05,020 [http-nio-7070-exec-1] DEBUG MainClientExec:266 - Proxy auth state: UNCHALLENGED
linkeddatahub-1     | 19:18:05,020 [http-nio-7070-exec-1] DEBUG headers:133 - http-outgoing-0 >> GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG headers:136 - http-outgoing-0 >> Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG headers:136 - http-outgoing-0 >> User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG headers:136 - http-outgoing-0 >> Host: varnish-admin
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG headers:136 - http-outgoing-0 >> Connection: Keep-Alive
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG headers:136 - http-outgoing-0 >> Accept-Encoding: gzip,deflate
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "Host: varnish-admin[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "Connection: Keep-Alive[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "Accept-Encoding: gzip,deflate[\r][\n]"
linkeddatahub-1     | 19:18:05,021 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 >> "[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "HTTP/1.1 404 Not Found[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Cache-Control: must-revalidate,no-cache,no-store[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Pragma: no-cache[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Content-Type: text/plain;charset=utf-8[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Content-Length: 21[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Date: Thu, 19 Feb 2026 18:18:05 GMT[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "X-Varnish: 2[\r][\n]"
linkeddatahub-1     | 19:18:05,120 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Age: 0[\r][\n]"
linkeddatahub-1     | 19:18:05,121 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Via: 1.1 4569c5f75ff9 (Varnish/7.3)[\r][\n]"
linkeddatahub-1     | 19:18:05,121 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Connection: keep-alive[\r][\n]"
linkeddatahub-1     | 19:18:05,121 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "[\r][\n]"
linkeddatahub-1     | 19:18:05,121 [http-nio-7070-exec-1] DEBUG wire:73 - http-outgoing-0 << "Error 404: Not Found[\n]"
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:122 - http-outgoing-0 << HTTP/1.1 404 Not Found
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Cache-Control: must-revalidate,no-cache,no-store
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Pragma: no-cache
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Content-Type: text/plain;charset=utf-8
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Content-Length: 21
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Date: Thu, 19 Feb 2026 18:18:05 GMT
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << X-Varnish: 2
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Age: 0
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Via: 1.1 4569c5f75ff9 (Varnish/7.3)
linkeddatahub-1     | 19:18:05,123 [http-nio-7070-exec-1] DEBUG headers:125 - http-outgoing-0 << Connection: keep-alive
linkeddatahub-1     | 19:18:05,125 [http-nio-7070-exec-1] DEBUG MainClientExec:285 - Connection can be kept alive indefinitely
linkeddatahub-1     | 19:18:05,132 [http-nio-7070-exec-1] DEBUG ModelProvider:83 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:18:05,136 [http-nio-7070-exec-1] ERROR riot:120 - [line: 1, col: 1 ] Expected BNode or IRI: Got: [KEYWORD:Error]
linkeddatahub-1     | 19:18:05,137 [http-nio-7070-exec-1] DEBUG Application$16:344 - Connection [id: 0][route: {}->http://varnish-admin:80] can be kept alive indefinitely
linkeddatahub-1     | 19:18:05,142 [http-nio-7070-exec-1] DEBUG DefaultManagedHttpClientConnection:88 - http-outgoing-0: set socket timeout to 0
linkeddatahub-1     | 19:18:05,143 [http-nio-7070-exec-1] DEBUG Application$16:351 - Connection released: [id: 0][route: {}->http://varnish-admin:80][total available: 1; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:18:05,206 [http-nio-7070-exec-1] DEBUG BasedModelProvider:81 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:18:05,206 [http-nio-7070-exec-1] DEBUG ModelProvider:159 - Syntax used to write Model: N-Triples
linkeddatahub-1     | 19:18:35,349 [http-nio-7070-exec-2] DEBUG ApplicationFilter:139 - Request URI <https://localhost:4443/ns> has not matched any lapp:Dataset
linkeddatahub-1     | 19:18:35,352 [http-nio-7070-exec-2] DEBUG OntologyFilter:153 - Started loading ontology with URI 'https://localhost:4443/ns#' from the admin dataset
linkeddatahub-1     | 19:18:35,360 [http-nio-7070-exec-2] DEBUG RequestAddCookies:123 - CookieSpec selected: default
linkeddatahub-1     | 19:18:35,360 [http-nio-7070-exec-2] DEBUG RequestAuthCache:77 - Auth cache not set in the context
linkeddatahub-1     | 19:18:35,360 [http-nio-7070-exec-2] DEBUG Application$16:267 - Connection request: [route: {}->http://varnish-admin:80][total available: 1; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:18:35,364 [http-nio-7070-exec-2] DEBUG wire:87 - http-outgoing-0 << "[read] I/O error: Read timed out"
linkeddatahub-1     | 19:18:35,364 [http-nio-7070-exec-2] DEBUG Application$16:312 - Connection leased: [id: 0][route: {}->http://varnish-admin:80][total available: 0; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:18:35,364 [http-nio-7070-exec-2] DEBUG DefaultManagedHttpClientConnection:88 - http-outgoing-0: set socket timeout to 0
linkeddatahub-1     | 19:18:35,365 [http-nio-7070-exec-2] DEBUG MainClientExec:255 - Executing request GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:18:35,365 [http-nio-7070-exec-2] DEBUG MainClientExec:260 - Target auth state: UNCHALLENGED
linkeddatahub-1     | 19:18:35,365 [http-nio-7070-exec-2] DEBUG MainClientExec:266 - Proxy auth state: UNCHALLENGED
linkeddatahub-1     | 19:18:35,365 [http-nio-7070-exec-2] DEBUG headers:133 - http-outgoing-0 >> GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:18:35,365 [http-nio-7070-exec-2] DEBUG headers:136 - http-outgoing-0 >> Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG headers:136 - http-outgoing-0 >> User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG headers:136 - http-outgoing-0 >> Host: varnish-admin
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG headers:136 - http-outgoing-0 >> Connection: Keep-Alive
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG headers:136 - http-outgoing-0 >> Accept-Encoding: gzip,deflate
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "Host: varnish-admin[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "Connection: Keep-Alive[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "Accept-Encoding: gzip,deflate[\r][\n]"
linkeddatahub-1     | 19:18:35,366 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 >> "[\r][\n]"
linkeddatahub-1     | 19:18:35,367 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "HTTP/1.1 404 Not Found[\r][\n]"
linkeddatahub-1     | 19:18:35,367 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Cache-Control: must-revalidate,no-cache,no-store[\r][\n]"
linkeddatahub-1     | 19:18:35,367 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Pragma: no-cache[\r][\n]"
linkeddatahub-1     | 19:18:35,367 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Content-Type: text/plain;charset=utf-8[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Content-Length: 21[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Date: Thu, 19 Feb 2026 18:18:05 GMT[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "X-Varnish: 4 3[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Age: 30[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Via: 1.1 4569c5f75ff9 (Varnish/7.3)[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Connection: keep-alive[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "[\r][\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG wire:73 - http-outgoing-0 << "Error 404: Not Found[\n]"
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG headers:122 - http-outgoing-0 << HTTP/1.1 404 Not Found
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Cache-Control: must-revalidate,no-cache,no-store
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Pragma: no-cache
linkeddatahub-1     | 19:18:35,368 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Content-Type: text/plain;charset=utf-8
linkeddatahub-1     | 19:18:35,369 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Content-Length: 21
linkeddatahub-1     | 19:18:35,370 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Date: Thu, 19 Feb 2026 18:18:05 GMT
linkeddatahub-1     | 19:18:35,370 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << X-Varnish: 4 3
linkeddatahub-1     | 19:18:35,370 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Age: 30
linkeddatahub-1     | 19:18:35,371 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Via: 1.1 4569c5f75ff9 (Varnish/7.3)
linkeddatahub-1     | 19:18:35,371 [http-nio-7070-exec-2] DEBUG headers:125 - http-outgoing-0 << Connection: keep-alive
linkeddatahub-1     | 19:18:35,373 [http-nio-7070-exec-2] DEBUG MainClientExec:285 - Connection can be kept alive indefinitely
linkeddatahub-1     | 19:18:35,375 [http-nio-7070-exec-2] DEBUG ModelProvider:83 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:18:35,379 [http-nio-7070-exec-2] ERROR riot:120 - [line: 1, col: 1 ] Expected BNode or IRI: Got: [KEYWORD:Error]
linkeddatahub-1     | 19:18:35,379 [http-nio-7070-exec-2] DEBUG Application$16:344 - Connection [id: 0][route: {}->http://varnish-admin:80] can be kept alive indefinitely
linkeddatahub-1     | 19:18:35,379 [http-nio-7070-exec-2] DEBUG DefaultManagedHttpClientConnection:88 - http-outgoing-0: set socket timeout to 0
linkeddatahub-1     | 19:18:35,379 [http-nio-7070-exec-2] DEBUG Application$16:351 - Connection released: [id: 0][route: {}->http://varnish-admin:80][total available: 1; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:18:35,391 [http-nio-7070-exec-2] DEBUG BasedModelProvider:81 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:18:35,391 [http-nio-7070-exec-2] DEBUG ModelProvider:159 - Syntax used to write Model: N-Triples
linkeddatahub-1     | 19:19:05,474 [http-nio-7070-exec-3] DEBUG ApplicationFilter:139 - Request URI <https://localhost:4443/ns> has not matched any lapp:Dataset
linkeddatahub-1     | 19:19:05,476 [http-nio-7070-exec-3] DEBUG OntologyFilter:153 - Started loading ontology with URI 'https://localhost:4443/ns#' from the admin dataset
linkeddatahub-1     | 19:19:05,481 [http-nio-7070-exec-3] DEBUG RequestAddCookies:123 - CookieSpec selected: default
linkeddatahub-1     | 19:19:05,481 [http-nio-7070-exec-3] DEBUG RequestAuthCache:77 - Auth cache not set in the context
linkeddatahub-1     | 19:19:05,481 [http-nio-7070-exec-3] DEBUG Application$16:267 - Connection request: [route: {}->http://varnish-admin:80][total available: 1; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG wire:87 - http-outgoing-0 << "[read] I/O error: Read timed out"
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG Application$16:312 - Connection leased: [id: 0][route: {}->http://varnish-admin:80][total available: 0; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG DefaultManagedHttpClientConnection:88 - http-outgoing-0: set socket timeout to 0
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG MainClientExec:255 - Executing request GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG MainClientExec:260 - Target auth state: UNCHALLENGED
linkeddatahub-1     | 19:19:05,484 [http-nio-7070-exec-3] DEBUG MainClientExec:266 - Proxy auth state: UNCHALLENGED
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:133 - http-outgoing-0 >> GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:136 - http-outgoing-0 >> Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:136 - http-outgoing-0 >> User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:136 - http-outgoing-0 >> Host: varnish-admin
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:136 - http-outgoing-0 >> Connection: Keep-Alive
linkeddatahub-1     | 19:19:05,485 [http-nio-7070-exec-3] DEBUG headers:136 - http-outgoing-0 >> Accept-Encoding: gzip,deflate
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "GET /?query=PREFIX%20%20owl%3A%20%20%3Chttp%3A%2F%2Fwww.w3.org%2F2002%2F07%2Fowl%23%3E%0A%0ACONSTRUCT%20%0A%20%20%7B%20%0A%20%20%20%20%3Fs%20%3Fp%20%3Fo%20.%0A%20%20%7D%0AWHERE%0A%20%20%7B%20%20%20%7B%20GRAPH%20%3Fg%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20%20a%20%20%20owl%3AOntology%20.%0A%20%20%20%20%20%20%20%20%20%20%20%20%3Fs%20%20%20%20%20%20%20%20%3Fp%20%20%3Fo%0A%20%20%20%20%20%20%20%20%20%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%20%20UNION%0A%20%20%20%20%20%20%7B%20GRAPH%20%3Chttps%3A%2F%2Flocalhost%3A4443%2Fns%23%3E%0A%20%20%20%20%20%20%20%20%20%20%7B%20%3Fs%20%20%3Fp%20%20%3Fo%20%7D%0A%20%20%20%20%20%20%7D%0A%20%20%7D%0A HTTP/1.1[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "Accept: text/turtle;q=0.5,application/rdf+xml;q=0.5,application/rdf+protobuf;q=0.5,application/rdf+json;q=0.5,application/trix;q=0.5,application/n-triples;q=0.6,text/rdf+n3;q=0.5,application/rdf+thrift;q=0.7,x/ld-json-10;q=0.5,x/ld-json-11;q=0.5,text/shaclc;q=0.5,application/ld+json;q=0.5[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "User-Agent: Jersey/3.1.0 (Apache HttpClient 4.5.13)[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "Host: varnish-admin[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "Connection: Keep-Alive[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "Accept-Encoding: gzip,deflate[\r][\n]"
linkeddatahub-1     | 19:19:05,486 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 >> "[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "HTTP/1.1 404 Not Found[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Cache-Control: must-revalidate,no-cache,no-store[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Pragma: no-cache[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Content-Type: text/plain;charset=utf-8[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Content-Length: 21[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Date: Thu, 19 Feb 2026 18:18:05 GMT[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "X-Varnish: 5 3[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Age: 60[\r][\n]"
linkeddatahub-1     | 19:19:05,487 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Via: 1.1 4569c5f75ff9 (Varnish/7.3)[\r][\n]"
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Connection: keep-alive[\r][\n]"
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "[\r][\n]"
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG wire:73 - http-outgoing-0 << "Error 404: Not Found[\n]"
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:122 - http-outgoing-0 << HTTP/1.1 404 Not Found
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Cache-Control: must-revalidate,no-cache,no-store
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Pragma: no-cache
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Content-Type: text/plain;charset=utf-8
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Content-Length: 21
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Date: Thu, 19 Feb 2026 18:18:05 GMT
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << X-Varnish: 5 3
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Age: 60
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Via: 1.1 4569c5f75ff9 (Varnish/7.3)
linkeddatahub-1     | 19:19:05,488 [http-nio-7070-exec-3] DEBUG headers:125 - http-outgoing-0 << Connection: keep-alive
linkeddatahub-1     | 19:19:05,489 [http-nio-7070-exec-3] DEBUG MainClientExec:285 - Connection can be kept alive indefinitely
linkeddatahub-1     | 19:19:05,490 [http-nio-7070-exec-3] DEBUG ModelProvider:83 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:19:05,490 [http-nio-7070-exec-3] ERROR riot:120 - [line: 1, col: 1 ] Expected BNode or IRI: Got: [KEYWORD:Error]
linkeddatahub-1     | 19:19:05,490 [http-nio-7070-exec-3] DEBUG Application$16:344 - Connection [id: 0][route: {}->http://varnish-admin:80] can be kept alive indefinitely
linkeddatahub-1     | 19:19:05,490 [http-nio-7070-exec-3] DEBUG DefaultManagedHttpClientConnection:88 - http-outgoing-0: set socket timeout to 0
linkeddatahub-1     | 19:19:05,491 [http-nio-7070-exec-3] DEBUG Application$16:351 - Connection released: [id: 0][route: {}->http://varnish-admin:80][total available: 1; route allocated: 1 of 20; total allocated: 1 of 40]
linkeddatahub-1     | 19:19:05,492 [http-nio-7070-exec-3] DEBUG BasedModelProvider:81 - RDF language used to read Model: Lang:N-Triples
linkeddatahub-1     | 19:19:05,493 [http-nio-7070-exec-3] DEBUG ModelProvider:159 - Syntax used to write Model: N-Triples
Container linkeddatahub-linkeddatahub-1 Error dependency linkeddatahub failed to start
dependency failed to start: container linkeddatahub-linkeddatahub-1 is unhealthy