Fixing Nginx Upstream Connection Refused and Permission Denied - Git index.lock Error on Mac: Fix and Prevention-Docker Volume Permission Denied for Non-Root User Fix

Updated 2026-07-28 09:14:21backup-recovery
Fixing Nginx Upstream Connection Refused and Permission Denied - Git index.lock Error on Mac: Fix and Prevention-Docker Volume Permission Denied for Non-Root User Fix
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.