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How to Fix Nginx Upstream Connection Refused on Port 80 - How to Fix Firefox Secure Connection Failed on Mac-Mac Chrome Extensions Not Loading – Troubleshooting Steps

Updated 2026-07-28 03:37:18docker-kubernetes
How to Fix Nginx Upstream Connection Refused on Port 80 - How to Fix Firefox Secure Connection Failed on Mac-Mac Chrome Extensions Not Loading – Troubleshooting Steps
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.