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Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide - Git LFS on GitHub: Setup Guide and Common Fixes-Cloudflare 521 Error: DNS and Server Checks

Updated 2026-07-29 04:24:05cloud-software
Fix Cloudflare 521 Error on Nginx: Step-by-Step Guide - Git LFS on GitHub: Setup Guide and Common Fixes-Cloudflare 521 Error: DNS and Server Checks
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.

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