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Fix 'npm install' Permission Denied When Using Yarn - How to Fix Git 'index.lock' File Exists Error-VS Code Not Showing Git Changes After Branch Switch

Updated 2026-07-28 04:09:42macos-help
Fix 'npm install' Permission Denied When Using Yarn - How to Fix Git 'index.lock' File Exists Error-VS Code Not Showing Git Changes After Branch Switch
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.