GitLab change history: 500 errors while accessing projects

GitLab reported a major incident affecting Git Operations and Website: some users could not access projects and encountered 500 errors. It started at 2026-09-24 13:48 UTC and resolved at 2026-09-24 20:50 UTC, lasting 7 h 2 min. A temporary mitigation was implemented; GitLab later reported errors were no longer elevated, without specifying the cause or final fix.