Fixing 'git rebase index.lock file exists' Error - Docker Build Context Canceled: Checklist and Fixes-Troubleshooting Nginx Upstream Connection Issues

Updated 2026-07-28 17:32:56browser-issues
Fixing 'git rebase index.lock file exists' Error - Docker Build Context Canceled: Checklist and Fixes-Troubleshooting Nginx Upstream Connection Issues
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.