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Fix npm 'package.json not found' Error in Subdirectories - Nginx Cloudflare 521 Troubleshooting Guide-Windows 11 Blue Screen After Cumulative Update: Fixes That Work

Updated 2026-07-28 14:49:13browser-issues
Fix npm 'package.json not found' Error in Subdirectories - Nginx Cloudflare 521 Troubleshooting Guide-Windows 11 Blue Screen After Cumulative Update: Fixes That Work
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.