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Fix Nginx Configuration Test Failure After Adding Proxy Pass - How to Fix Node Version Mismatch When Running npm run build-How to Resolve Nginx 502 Error with Docker and Load Balancer

Updated 2026-07-28 06:00:21windows-fixes

Fix Nginx Configuration Test Failure After Adding Proxy Pass - How to Fix Node Version Mismatch When Running npm run build-How to Resolve Nginx 502 Error with Docker and Load Balancer

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.