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Fix Cloudflare Origin Certificate Permission Denied Error - Nginx Upstream Connection Refused Error Fix-Node.js Garbage Collection Tuning to Avoid Heap Out of Memory

Updated 2026-07-28 14:32:51office-tools
Fix Cloudflare Origin Certificate Permission Denied Error - Nginx Upstream Connection Refused Error Fix-Node.js Garbage Collection Tuning to Avoid Heap Out of Memory
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.