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Fix Nginx 502 Bad Gateway with Docker Socket - Docker Engine Won't Start: Troubleshooting Guide-Node Sass Build Failed: How to Upgrade Node Version

Updated 2026-07-28 06:53:53backup-recovery
Fix Nginx 502 Bad Gateway with Docker Socket - Docker Engine Won't Start: Troubleshooting Guide-Node Sass Build Failed: How to Upgrade Node Version
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.