StackBlitz Common Errors Error Reference SharedArrayBuffer is not defined Cause: Missing cross-origin isolation headers. Fix: Add both headers to your server. In Vite: config. Failed to boot WebContainer Cause: Only one WebContainer instance allowed per page. npm install hangs or fails Cause: Large dependency tree or network issue in WebContainer. server-ready event never fires Cause: Application not listening on a port. File operations fail with ENOENT Cause: Parent directory doesn't exist. Quick Diagnostic Error Handling | Error | Retryable | Action | |-------|-----------|--------| | Missin…