Grafana 9.0.0: autocomplete annotation tags

[garnachod]

What happened:
When I try to create a new annotation in a metric and type (autocomplete) for the proper tag, the interface launch an error.

What you expected to happen:
In version 8.5.2 the annotation tag is autocomplete

How to reproduce it (as minimally and precisely as possible):
In a dashboard annotated with tags, try to create a new annotation and when the tag is searched may raise the error, in my case always the error is raised

Anything else we need to know?:
Error raised in file https://github.com/grafana/grafana/blob/main/packages/grafana-ui/src/utils/tags.ts Line:70
Maybe one value undefined is passed to this function?

Environment:

• Grafana version: OSS 9.0.0
• Data source type & version: Prometheus 2.36.0
• OS Grafana is installed on: Amazon Linux 2, binary .tar.gz
• User OS & Browser: Chrome Linux
• Grafana plugins: Default
• Others: Grafana configuration database, postgres

[gelicia]

@garnachod Can you share what the error is that is above your type error? I'm wondering if this is another symptom of #50841 where we weren't sending the right headers with prometheus

[garnachod]

@gelicia sorry I didn't added the message before. I thought the messages were not related

[gelicia]

@garnachod Ah that is helpful, but I have one more question. Can you go to your network tab in dev tools and see if any calls there are failing? I'm looking for calls to something like api/datasources failing?

[garnachod]

@gelicia I can't see any request falling at this moment, the API returns correctly the tags.

The system only fail if I try to search one tag.

[carlkidcrypto]

Hello there @gelicia , I just experienced this same issue ~5 minutes ago.
Environment:
Grafana version: OSS 9.0.0 -

Data source type & version: PSQL 13.7
OS Grafana is installed on:
User OS & Browser: Chrome Linux -
Grafana plugins: Default, Grafana Image Render

Steps to reproduce:

1. click on a panel and attempt to create an annotation
2. Then search for a Tag under 'Add tags'
3. Error shows up:
   
   

Also worth mentioning that under the developer tools in chrome I don't see any network errors.