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Fix Nginx Upstream Connection Refused Socket Error - How to Fix Detached HEAD and Merge to Master-Resolve Docker Compose Port Conflict on Windows

Updated 2026-07-28 12:36:07cloud-software

Fix Nginx Upstream Connection Refused Socket Error - How to Fix Detached HEAD and Merge to Master-Resolve Docker Compose Port Conflict on Windows

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.