Home / office-tools / Fixing Nginx Upstream Connection Refused and Permission Denied - How to Fix 'index.lock file exists' in Git Rebase-How to Resolve Port Already in Use in Docker Compose

Fixing Nginx Upstream Connection Refused and Permission Denied - How to Fix 'index.lock file exists' in Git Rebase-How to Resolve Port Already in Use in Docker Compose

Updated 2026-07-28 07:41:01office-tools

Fixing Nginx Upstream Connection Refused and Permission Denied - How to Fix 'index.lock file exists' in Git Rebase-How to Resolve Port Already in Use in Docker Compose

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.