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Fix Node Sass Build Failure by Upgrading Node Version - Troubleshooting 'port is already allocated' in Docker Compose-Why Your Python Virtual Environment Isn't Activating

Updated 2026-07-28 12:01:52macos-help
Fix Node Sass Build Failure by Upgrading Node Version - Troubleshooting 'port is already allocated' in Docker Compose-Why Your Python Virtual Environment Isn't Activating
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.