Bug " Channel closed: 1006" running in Docker - VPS

Hello, i have a bug in browser console: “react_devtools_backend.js:2450 2020-11-10T19:25:51.282Z [modules/RTC/BridgeChannel.js] <WebSocket.e.onclose>: Channel closed: 1006” i cant find the solution.
Into the VPS i don´t have nginx installed, only the four docker. I have the certificated ssl and it is ok.
Other problem is with the count the people that can be in the meet, i dont know if it es related, not more than 2, when the third person want connect the functionality is breake and i cant use the microphone and video