jdtls server error. WARNING: Using incubator modules

[hexhoc]

Mac os (Sonoma), java 17.

When i open java project, I get an error message

Language server error: java

oneshot canceled
-- stderr--
WARNING: Using incubator modules: jdk.incubator.vector, jdk.incubator.foreign
Oct 22, 2024 1:38:07 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.servlet.LogbackServletContainerInitializer of service jakarta.servlet.ServletContainerInitializer in bundle ch.qos.logback.classic
Oct 22, 2024 1:38:07 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic

jdtls is not working

[hexhoc]

2024-10-22T16:05:14.052561+03:00 [INFO] ========== starting zed ==========
2024-10-22T16:05:14.053684+03:00 [INFO] Opening main db
2024-10-22T16:05:14.05718+03:00 [INFO] Opening main db
2024-10-22T16:05:14.096952+03:00 [INFO] Using git binary path: Some("/Applications/Zed.app/Contents/MacOS/git")
2024-10-22T16:05:14.250143+03:00 [INFO] initializing context server client
2024-10-22T16:05:14.250352+03:00 [INFO] Registering built-in prompt template: content_prompt
2024-10-22T16:05:14.250685+03:00 [INFO] Registering built-in prompt template: edit_workflow
2024-10-22T16:05:14.250876+03:00 [INFO] Registering built-in prompt template: project_slash_command
2024-10-22T16:05:14.250959+03:00 [INFO] Registering built-in prompt template: step_resolution
2024-10-22T16:05:14.251279+03:00 [INFO] Registering built-in prompt template: terminal_assistant_prompt
2024-10-22T16:05:14.251451+03:00 [INFO] No prompt template overrides directory found at /Users/ruazsv7/.config/zed/prompt_overrides. Using built-in prompts.
2024-10-22T16:05:14.251899+03:00 [INFO] extensions updated. loading 2, reloading 0, unloading 0
2024-10-22T16:05:14.28903+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.289143+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.289217+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.289288+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.290458+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.290582+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.290665+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.290763+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.290841+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.291675+03:00 [INFO] Opening main db
2024-10-22T16:05:14.295188+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.302976+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.328416+03:00 [INFO] Opening main db
2024-10-22T16:05:14.32865+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.337341+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.337432+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.340199+03:00 [INFO] Opening main db
2024-10-22T16:05:14.356132+03:00 [INFO] set status on client 0: Authenticating
2024-10-22T16:05:14.35751+03:00 [INFO] Initializing default prettier with plugins {}
2024-10-22T16:05:14.358586+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.360407+03:00 [INFO] Initializing default prettier with plugins {}
2024-10-22T16:05:14.363082+03:00 [INFO] building git repository, `.git` path in the worktree: ".git"
2024-10-22T16:05:14.363273+03:00 [INFO] set status on client 180777: Connecting
2024-10-22T16:05:14.363843+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.390195+03:00 [INFO] Initializing default prettier with plugins {}
2024-10-22T16:05:14.408602+03:00 [INFO] Initializing default prettier with plugins {}
2024-10-22T16:05:14.437257+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:14.437478+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:14.437694+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:14.443467+03:00 [INFO] Node runtime install_if_needed
2024-10-22T16:05:14.451557+03:00 [INFO] set environment variables from shell:/bin/zsh, path:/Library/Java/JavaVirtualMachines/jdk-17.jdk/Contents/Home/bin:/Users/ruazsv7/.local/bin:/opt/homebrew/bin:/opt/homebrew/sbin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Applications/VMware Fusion.app/Contents/Public:/usr/local/go/bin:/usr/local/munki:/Users/ruazsv7/.cargo/bin:/Users/ruazsv7/Library/Application Support/JetBrains/Toolbox/scripts
2024-10-22T16:05:14.454747+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.454892+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.454996+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.568778+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:14.568878+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:14.568953+03:00 [INFO] attempting to start language server "java", path: "/Users/ruazsv7/Documents/git/factoring/hello-world", id: 1
2024-10-22T16:05:14.569826+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:14.95318+03:00 [INFO] connected to rpc endpoint https://collab.zed.dev/rpc
2024-10-22T16:05:14.956998+03:00 [INFO] starting language server process. binary path: "/Users/ruazsv7/Library/Application Support/Zed/extensions/work/java-eclipse-jdtls/eclipse.jdt.ls/bin/jdtls", working directory: "/Users/ruazsv7/Documents/git/factoring/hello-world", args: []
2024-10-22T16:05:15.665288+03:00 [INFO] add connection to peer
2024-10-22T16:05:15.665376+03:00 [INFO] add_connection;
2024-10-22T16:05:15.665441+03:00 [INFO] waiting for server hello
2024-10-22T16:05:15.682202+03:00 [INFO] got server hello
2024-10-22T16:05:15.682291+03:00 [INFO] set status to connected (connection id: ConnectionId { owner_id: 0, id: 0 }, peer id: PeerId { owner_id: 594, id: 483759 })
2024-10-22T16:05:15.682419+03:00 [INFO] set status on client 180777: Connected { peer_id: PeerId { owner_id: 594, id: 483759 }, connection_id: ConnectionId { owner_id: 0, id: 0 } }
2024-10-22T16:05:15.967189+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:15.967309+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:15.974664+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:15.982488+03:00 [INFO] starting language server process. binary path: "/opt/homebrew/bin/node", working directory: "/", args: ["/Users/ruazsv7/Library/Application Support/Zed/copilot/copilot-v0.5.0/dist/agent.js", "--stdio"]
2024-10-22T16:05:16.249128+03:00 [INFO] Language server with id 0 sent unhandled notification LogMessage:
{
  "level": 0,
  "message": "[DEBUG] [agent] [2024-10-22T13:05:16.244Z] Agent service starting",
  "metadataStr": "[DEBUG] [agent] [2024-10-22T13:05:16.244Z]",
  "extra": [
    "Agent service starting"
  ]
}
2024-10-22T16:05:16.257274+03:00 [INFO] Language server with id 0 sent unhandled notification client/registerCapability:
{
  "registrations": [
    {
      "id": "77a6a8db-846b-4691-8314-391aede8a3e5",
      "method": "workspace/didChangeWorkspaceFolders",
      "registerOptions": {}
    }
  ]
}
2024-10-22T16:05:16.284583+03:00 [INFO] Language server with id 0 sent unhandled notification LogMessage:
{
  "level": 0,
  "message": "[DEBUG] [agent] [2024-10-22T13:05:16.267Z] Telemetry initialized",
  "metadataStr": "[DEBUG] [agent] [2024-10-22T13:05:16.267Z]",
  "extra": [
    "Telemetry initialized"
  ]
}
2024-10-22T16:05:16.332365+03:00 [ERROR] cannot read LSP message headers
2024-10-22T16:05:16.340408+03:00 [ERROR] Broken pipe (os error 32)
2024-10-22T16:05:16.340501+03:00 [ERROR] server shut down
2024-10-22T16:05:16.348732+03:00 [ERROR] Failed to start language server "java": oneshot canceled
2024-10-22T16:05:16.34882+03:00 [ERROR] server stderr: "WARNING: Using incubator modules: jdk.incubator.foreign, jdk.incubator.vector\nOct 22, 2024 4:05:15 PM org.apache.aries.spifly.BaseActivator log\nINFO: Registered provider ch.qos.logback.classic.servlet.LogbackServletContainerInitializer of service jakarta.servlet.ServletContainerInitializer in bundle ch.qos.logback.classic\nOct 22, 2024 4:05:15 PM org.apache.aries.spifly.BaseActivator log\nINFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic\n"
2024-10-22T16:05:16.500116+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:16.500226+03:00 [INFO] Initializing default prettier with plugins {"prettier-plugin-java"}
2024-10-22T16:05:16.507629+03:00 [WARN] request completed with error: failed to connect to the server
2024-10-22T16:05:16.732076+03:00 [ERROR] failed to fetch cached embeddings via cloud model

Caused by:
    RPC request GetCachedEmbeddings failed: permission denied
2024-10-22T16:05:16.740681+03:00 [INFO] Summarizing updated entries took 2.916µs
2024-10-22T16:05:16.765403+03:00 [INFO] Summarizing updated entries took 4.167µs
2024-10-22T16:05:25.98837+03:00 [INFO] Installing default prettier and plugins: [("prettier-plugin-java", "2.6.4"), ("prettier", "3.3.3")]
2024-10-22T16:05:27.604999+03:00 [INFO] Initialized prettier with plugins: {"prettier-plugin-java"}
2024-10-22T16:05:27.957563+03:00 [ERROR] connection error: delay between messages too long
2024-10-22T16:05:27.958043+03:00 [INFO] set status on client 180777: ConnectionLost
2024-10-22T16:05:27.968991+03:00 [INFO] set status on client 180777: Reauthenticating
2024-10-22T16:05:27.969391+03:00 [INFO] set status on client 180777: Reconnecting
2024-10-22T16:05:28.496872+03:00 [INFO] connected to rpc endpoint https://collab.zed.dev/rpc
2024-10-22T16:05:29.323227+03:00 [INFO] add connection to peer
2024-10-22T16:05:29.323578+03:00 [INFO] add_connection;
2024-10-22T16:05:29.323794+03:00 [INFO] waiting for server hello
2024-10-22T16:05:29.324164+03:00 [INFO] got server hello
2024-10-22T16:05:29.324377+03:00 [INFO] set status to connected (connection id: ConnectionId { owner_id: 0, id: 1 }, peer id: PeerId { owner_id: 594, id: 483879 })
2024-10-22T16:05:29.324678+03:00 [INFO] set status on client 180777: Connected { peer_id: PeerId { owner_id: 594, id: 483879 }, connection_id: ConnectionId { owner_id: 0, id: 1 } }
2024-10-22T16:05:40.694409+03:00 [ERROR] connection error: delay between messages too long
2024-10-22T16:05:40.694791+03:00 [INFO] set status on client 180777: ConnectionLost
2024-10-22T16:05:40.695512+03:00 [INFO] set status on client 180777: Reauthenticating
2024-10-22T16:05:40.695716+03:00 [INFO] set status on client 180777: Reconnecting
2024-10-22T16:05:41.272747+03:00 [INFO] connected to rpc endpoint https://collab.zed.dev/rpc
2024-10-22T16:05:42.541435+03:00 [INFO] add connection to peer
2024-10-22T16:05:42.541748+03:00 [INFO] add_connection;
2024-10-22T16:05:42.541916+03:00 [INFO] waiting for server hello
2024-10-22T16:05:42.542404+03:00 [INFO] got server hello
2024-10-22T16:05:42.542578+03:00 [INFO] set status to connected (connection id: ConnectionId { owner_id: 0, id: 2 }, peer id: PeerId { owner_id: 594, id: 484010 })
2024-10-22T16:05:42.542825+03:00 [INFO] set status on client 180777: Connected { peer_id: PeerId { owner_id: 594, id: 484010 }, connection_id: ConnectionId { owner_id: 0, id: 2 } }

[valentinegb]

A few questions:

1. What version of Java should your project be using?
2. Do you have JDTLS set to use the version of Java in question 1 in your Zed settings?
3. Do you have any other versions of Java installed?
4. What build tool are you using and what version of Java does it recommend?

These are all related to Java versions since that's the root cause of most issues. Besides that, the next most common solution is to restart the language server a few times. That works a surprising amount ¯\_(ツ)_/¯

[hexhoc]

@valentinegb

1. java 17.0.12 2024-07-16 LTS
2. set version jdtls 1.40 in zed settings
3. no
4. Maven 3.9.9

[valentinegb]

Are you able to send full language server logs? (Something like "language server logs" I'm pretty sure in the command palette)

[hexhoc]

When i run jdtls by itself. It shows me the same warnings. These are just warnings. There are no errors

 hexhoc@n-nb-maczsv7-1  ~  jdtls
WARNING: Using incubator modules: jdk.incubator.vector, jdk.incubator.foreign
Oct 22, 2024 6:07:20 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.servlet.LogbackServletContainerInitializer of service jakarta.servlet.ServletContainerInitializer in bundle ch.qos.logback.classic
Oct 22, 2024 6:07:20 PM org.apache.aries.spifly.BaseActivator log
INFO: Registered provider ch.qos.logback.classic.spi.LogbackServiceProvider of service org.slf4j.spi.SLF4JServiceProvider in bundle ch.qos.logback.classic

[valentinegb]

Does it exit or keep running?

[hexhoc]

@valentinegb Keep running. it seems that Zed defines warning as a error

[valentinegb]

Have you confirmed that lsp features in Zed aren't working after the warning?

[hexhoc]

@valentinegb yes

[hexhoc]

Install jdtls version 1.28.0, which does not print warnings about using preview features. The problem has been solved.
Conclusion, Zed defines warning as a error