I'm getting a 404 error when trying to submit code

I’m encountering a 404 error when trying to submit code. Previously, I was able to submit without issues, but recently the submission fails—after clicking submit, the page doesn’t respond, and the Python console shows no reaction either. Many errors appear (including 404). I’m not sure what’s going on—has access from China been blocked?

Welcome to the forum and sorry you are running into trouble.

You can test if fCC is blocked from your console:

DNS test Windows

nslookup www.freecodecamp.org

DNS test macOS/Linus

dig www.freecodecamp.org

HTTP-test all platforms (bash)

curl -I https://www.freecodecamp.org

No or a wrong IP means your request is blocked.
If you get the information, try a browser reset and keep us updated.

Best regards