Why Kurento cannot record media stream from mobile to web when recording from web?

Question

I am not able to record the media stream taken from the onTrack callback from RTCPeerConnection, here is the code I want to use to record the incoming mobile video call from the web I want to get a mediaStream from onTrack

this.myPeerConnection.ontrack = e => {
        this.webcamStreamRecieved = e.streams[0];
    };

I create a new RTCPeerConnection to connect to kurento and addTrack

this.webcamStreamRecieved.getTracks().forEach(track => {
            this.remoteRecordPeerConnection.addTrack(track, thís.webcamStreamRecieved);
        });

recorder.addRecordingListener not enabled in kurento, the generated file does not increase in size but stops at 0 bytes