Which version of my socket is compatible with the client?

Question

I'm curious, Which version of my socket is compatible with the client?

Occurrence error, "The client is using an unsupported version of the Socket.IO or Engine.IO protocols", flask socket.io.js:3511, 400 (400 BAD REQUEST) "The client is using an unsupported version of the Socket.IO or Engine.IO protocols"

These are my Server current versions:

1. Flask-SocketIO==5.2.0
2. python-engineio==4.3.3
3. python-socketio==5.7.1
4. simple-websocket==0.7.0

Client side: https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.4.8/socket.io.min.js

How can I fix this? Thank you