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Nginx 502 Bad Gateway: PHP-FPM Fix Guide - Fix npm ERESOLVE Dependency Tree Errors-Resolve Outlook SSL Certificate Problem 0x80048820

Updated 2026-06-18 20:22:59office-tools
Nginx 502 Bad Gateway: PHP-FPM Fix Guide - Fix npm ERESOLVE Dependency Tree Errors-Resolve Outlook SSL Certificate Problem 0x80048820
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.

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