Socket.io Error

[W3SLAV]

Error with socket.io, prevents site from loading.

[caph1993]

Same problem here, using Python 3.8. The browser's console says index.js:83 GET http://127.0.0.1:5000/socket.io/?EIO=3&transport=polling&t=NiW7TLN 400 (BAD REQUEST).

[Whu-MT]

Same problem happens to me. Solved by changing socket.io version from 1.x to 4.x.
See https://python-socketio.readthedocs.io/en/latest/intro.html for more info.