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How to Fix Nginx 'Upstream Connection Refused' Error - Fix Node Sass Build Failure After npm Cache Clean-Fix 'git remote origin already exists' on GitHub

Updated 2026-07-28 13:42:28office-tools
How to Fix Nginx 'Upstream Connection Refused' Error - Fix Node Sass Build Failure After npm Cache Clean-Fix 'git remote origin already exists' on GitHub
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.