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Fix Nginx 'upstream connection refused' When Talking to PHP-FPM - Troubleshooting Docker Nginx 502 Bad Gateway-Resolve Chrome Sync Issues Across Profiles

Updated 2026-07-28 06:51:12developer-tools
Fix Nginx 'upstream connection refused' When Talking to PHP-FPM - Troubleshooting Docker Nginx 502 Bad Gateway-Resolve Chrome Sync Issues Across Profiles
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.

More repair notes

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