GitLab change history: Errors Opening Repositories

GitLab reported a major outage affecting Git Operations and Website: customers could not open projects and received error 500. It started at 2026-09-17 20:44 UTC and was resolved at 2026-09-18 13:45 UTC, lasting 17 h 1 min. A rollback across Gitaly nodes restored repository access; the root cause remained under investigation.