Nginx Upstream Connection Refused: Diagnosis and Fixes - How to Fix Breakpoints Not Working in Jest with VS Code-Understanding Git Conflict Types: Merge vs Rebase

Updated 2026-07-28 17:33:48office-tools
Nginx Upstream Connection Refused: Diagnosis and Fixes - How to Fix Breakpoints Not Working in Jest with VS Code-Understanding Git Conflict Types: Merge vs Rebase
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.