GitLab nested group - pipeline fails

[gu1ll0me]

Component

server

Describe the bug

Project in a nested group is detected and added successfully, but when triggered by the webhook (push event) the pipeline fails with the error below in the server logs (the PROJECT_NAME seems missing in the GET URL). However, everything is working fine when the pipeline is triggered manually with the "Run pipeline" button (no error in the server logs and the pipeline completes successfully).

{"level":"error","error":"GET https://SERVER/api/v4/projects/GROUP/SUBGROUP: 404 {message: 404 Project Not Found}","repo":"GROUP/SUBGROUP/PROJECT_NAME","user":"USER","time":"2023-08-21T12:03:16Z","message":"could not get folder from forge"}

And the UI shows :

Execution error
pipeline definition not found in GROUP/SUBGROUP/PROJECT_NAME

After that, the UI always shows An unknown error occurred. I have to use the "Repair repository" action to be able to work with the repository again.

System Info

{"source":"https://github.com/woodpecker-ci/woodpecker","version":"1.0.2"}

GitLab 16.2.4

Additional context

No response

Validations

• Read the Contributing Guidelines.
• Read the docs.
• Check that there isn't already an issue that reports the same bug to avoid creating a duplicate.
• Checked that the bug isn't fixed in the next version already [https://woodpecker-ci.org/faq#which-version-of-woodpecker-should-i-use]
• Check that this is a concrete bug. For Q&A join our Discord Chat Server or the Matrix room.

[6543]

-> #2981