New Request
Ready to debug
Why "Failed to fetch" happens:
1. CORS: Server blocked the browser.
2. Offline: No internet connection.
3. Invalid URL: Server doesn't exist.
Use the "Simulate Network Failure" button to test your error handling UI.
Response
// Response data will appear here...
TypeError: Failed to fetch
The request was made, but no response was received. This is usually caused by a network error, CORS policy, or the server being down.