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Fix Git SSL Certificate Problem: Unable to Get Local Issuer - npm Build Failed on Mac: Troubleshooting Guide-Fix Nginx Upstream Connection Refused & Upstream Not Found

Updated 2026-07-28 15:49:09macos-help
Fix Git SSL Certificate Problem: Unable to Get Local Issuer - npm Build Failed on Mac: Troubleshooting Guide-Fix Nginx Upstream Connection Refused & Upstream Not Found
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.

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