Peerjs WebRTC video screen becomes black if not on wifi code example

Example: Peerjs WebRTC video screen becomes black if not on wifi

const myPeer = new Peer(undefined, {
	config: {
      iceServers: [
        {urls: 'stun:stun.l.google.com:19302'},
        {
          url: 'turn:numb.viagenie.ca',
          credential: 'muazkh',
          username: '[email protected]',
        },
      ],
    }
})