https://developer.mozilla.org/en-US/docs/Web/API/RTCPeerConnection/icecandidateerror_event
RTCPeerConnection: icecandidateerror event - Web APIs | MDN
The icecandidateerror event is sent to an RTCPeerConnection if an error occurs while performing ICE negotiation through a STUN or TURN server.
event webrtcpeerconnectionapismdn