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Home / macos-help / Cloudflare 521 Error: Server Timeout – Causes and Fixes - Fix Git 'fatal: refusing to merge unrelated histories' on GitHub-Docker Compose Environment Variable Not Working: Fixes

Cloudflare 521 Error: Server Timeout – Causes and Fixes - Fix Git 'fatal: refusing to merge unrelated histories' on GitHub-Docker Compose Environment Variable Not Working: Fixes

Updated 2026-07-28 13:37:24macos-help
Cloudflare 521 Error: Server Timeout – Causes and Fixes - Fix Git 'fatal: refusing to merge unrelated histories' on GitHub-Docker Compose Environment Variable Not Working: Fixes
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.