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Nginx 502 Bad Gateway: PHP-FPM Fix Guide - FFmpeg Installation Checklist for Devs-Fix Chrome DNS_PROBE_FINISHED_NXDOMAIN After Network Change

2026-06-13 17:42:22cloud-software
Nginx 502 Bad Gateway: PHP-FPM Fix Guide - FFmpeg Installation Checklist for Devs-Fix Chrome DNS_PROBE_FINISHED_NXDOMAIN After Network Change

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.