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Fix 'nginx: configuration test failed unexpected end of file' - npm run build Permission Denied: Linux Fix Guide-How to Resolve Nginx Upstream Connection Refused Error 502

Updated 2026-07-28 10:44:55developer-tools
Fix 'nginx: configuration test failed unexpected end of file' - npm run build Permission Denied: Linux Fix Guide-How to Resolve Nginx Upstream Connection Refused Error 502
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  • Match the tool to the workflow that fails most often, not only the feature list.
  • Keep export format, permissions, and automation limits in the final decision.

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