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Fix Nginx Upstream Connection Refused Error - Cloudflare DNS Not Propagating After SSL Certificate Change-Troubleshooting Node Version Not Supported by npm Package

Updated 2026-07-28 19:01:47browser-issues
Fix Nginx Upstream Connection Refused Error - Cloudflare DNS Not Propagating After SSL Certificate Change-Troubleshooting Node Version Not Supported by npm Package
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.