socket io failed to connect but not sure what's the problem

[DeoLeung]

Describe the bug
GET /socket.io/?EIO=4&transport=websocket HTTP/1.1" 400 -

get 400 on server, and error in the front, with no debuggable information

Version
0.50.19

How did you install?

Docker
i have already config nginx to support websocket

To Reproduce

deploy arch: nginx -> nginx -> traefik -> changedetection(from sample docker, on linux)

Expected behavior
could see what's the problem in browser

Screenshots

[dgtlmoon]

I'm not sure, we dont officially support traefik (I have no idea what it is), but I would say its something todo with the websocket protocol and traefik

you should add more data from the chrome logs if possible