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How to Fix Cloudflare 521 Error During Setup - Cloudflare 521 Error on Nginx: How to Fix-Fix VS Code Breakpoints Not Working in SSH/Container

2026-07-28 23:16:29developer-tools
How to Fix Cloudflare 521 Error During Setup - Cloudflare 521 Error on Nginx: How to Fix-Fix VS Code Breakpoints Not Working in SSH/Container

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.

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