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How to Fix Cloudflare 521 Error (Port 443 Blocked) - Troubleshoot Git Merge Conflict Exit Code 128-Understanding and Resolving Git Detached HEAD

Updated 2026-07-28 13:34:32cloud-software
How to Fix Cloudflare 521 Error (Port 443 Blocked) - Troubleshoot Git Merge Conflict Exit Code 128-Understanding and Resolving Git Detached HEAD
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.