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Home / security-tools / How to Fix Cloudflare 522 Error (Firewall Blocking) - How to Fix 'Refusing to Merge Unrelated Histories' in Git-Docker Nginx 502 Error: Environment Variable Fix

How to Fix Cloudflare 522 Error (Firewall Blocking) - How to Fix 'Refusing to Merge Unrelated Histories' in Git-Docker Nginx 502 Error: Environment Variable Fix

Updated 2026-07-28 15:54:24security-tools
How to Fix Cloudflare 522 Error (Firewall Blocking) - How to Fix 'Refusing to Merge Unrelated Histories' in Git-Docker Nginx 502 Error: Environment Variable Fix
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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