How to reproduce?
curl --location 'http://localhost:8080/projects/LMfDCOqQv8/files' \
--header 'Content-Type: application/json' \
--data '{"path": "tmp", "content": "something"}'
Error
error="Failed to notify didOpen while reading file tmp: Language server not found for project LMfDCOqQv8 and language " path=tmp projectId=LMfDCOqQv8
Note
Changing "path": "tmp" -> "path":"tmp.go" does not produce an error.