Any: “TypeError: Failed to fetch”

What it means

The request never reached the server: wrong URL, server down, CORS, or http vs https.

How to fix it

Log the exact URL, open it directly, and check the Network tab.

Paste this into your AI tool

Stop retrying previous fixes. I'm getting this error: "TypeError: Failed to fetch". Likely cause: The request never reached the server: wrong URL, server down, CORS, or http vs https. Before editing, show me the relevant files and confirm the root cause. Then: Log the exact URL, open it directly, and check the Network tab. Change only what's necessary, don't delete working code, don't add new libraries unless required, and tell me exactly what you changed and how to verify it.