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Home / setup-checklists / Enable Wildcard Subdomain in Cloudflare: Step-by-Step - Fix Node Sass Build Failed: Reinstall Steps-Troubleshooting Nginx 502: Backend Connection Refused

Enable Wildcard Subdomain in Cloudflare: Step-by-Step - Fix Node Sass Build Failed: Reinstall Steps-Troubleshooting Nginx 502: Backend Connection Refused

Updated 2026-07-28 06:00:23setup-checklists
Enable Wildcard Subdomain in Cloudflare: Step-by-Step - Fix Node Sass Build Failed: Reinstall Steps-Troubleshooting Nginx 502: Backend Connection Refused
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.