How to Fix Git Push Rejected Non-Fast-Forward Error - Troubleshooting Nginx Upstream Connection Refused-Debugging Jest Tests in VS Code: Breakpoint Troubleshooting

Updated 2026-07-28 06:14:40developer-tools
How to Fix Git Push Rejected Non-Fast-Forward Error - Troubleshooting Nginx Upstream Connection Refused-Debugging Jest Tests in VS Code: Breakpoint Troubleshooting
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.