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Fix Cloudflare Wildcard Subdomain Origin Server Errors - Troubleshooting Nginx proxy_pass Connection Refused-Chrome DNS Error in Safe Mode: Fix Guide

Updated 2026-07-28 07:55:09developer-tools
Fix Cloudflare Wildcard Subdomain Origin Server Errors - Troubleshooting Nginx proxy_pass Connection Refused-Chrome DNS Error in Safe Mode: Fix Guide
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.