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VS Code IntelliSense Not Working for Java: Fix Guide - Run npm install Without sudo on Linux/macOS-Troubleshooting Cloudflare 521 Error After DNS Change

Updated 2026-07-28 06:04:35developer-tools
VS Code IntelliSense Not Working for Java: Fix Guide - Run npm install Without sudo on Linux/macOS-Troubleshooting Cloudflare 521 Error After DNS Change
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.