Socket connection closed! - Docker image behind apache

Running docker image behind apache server, I get the error:

Socket connection closed!

Error: Socket connection closed!
    at WebSocket.ws.onclose (https://vimflowy.mydomain.com/build/app.js:81:335053)

running the docker on port 3010 and then doing a proxypass and proxypassreverse etc using following:

    ProxyPreserveHost On
    ProxyPass / http://localhost:3010/
    ProxyPassReverse / http://localhost:3010/
    ProxyPass "/websocket/"  "ws://localhost:3010/websocket"
    ProxyPass "/websocket/" "wss://localhost:3010/websocket"

I have tried variations to above configuration by commenting line 4 and / or 5, removing websocket in end of 4 and 5 but no joy. I am certain it is the Apache config that is causing this issue but I dont know how / what do i need to change. I have to use Apache and cannot use Caddy as shown in the example

[pubmania]

Yep not working at all… just the web page showing the error reported in my first message

[pubmania]

Would you please be able to suggest apache config for websocket like you have done for caddy and I can give it a shot before completely giving up 😦