Websocket connection failed due connection close before it was established

[BeHumanX]

it return
WebSocket connection to 'ws://localhost:8080/app/?protocol=7&client=js&version=8.4.0-rc2&flash=false' failed:
and pusher-js.js?v=b2484c6c:1279 WebSocket connection to 'wss://localhost:8080/app/?protocol=7&client=js&version=8.4.0-rc2&flash=false' failed: WebSocket is closed before the connection is established.

i still don't get what's wrong with the websocket i've try to change forceTLS to be false but still not working, neither ws:// connection nor wss:// one