Node Sass Build Failed: Complete Troubleshooting Checklist - How to Set Up pnpm on Windows: A Practical Checklist-Nginx Upstream Connection Refused: Fixing localhost Errors

Updated 2026-07-28 17:07:54developer-tools
Node Sass Build Failed: Complete Troubleshooting Checklist - How to Set Up pnpm on Windows: A Practical Checklist-Nginx Upstream Connection Refused: Fixing localhost Errors
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.