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Fix Node Sass Build Failed: Sass Not Found - Docker Pull Access Denied on Mac M1: Step-by-Step Fix-Troubleshooting Nginx 502: Backend Connection Refused

Updated 2026-07-28 22:07:59office-tools
Fix Node Sass Build Failed: Sass Not Found - Docker Pull Access Denied on Mac M1: Step-by-Step Fix-Troubleshooting Nginx 502: Backend Connection Refused
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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