Switch camera isn't working on android browser about twilio-video-app-react HOT 4 CLOSED

const getLocalVideoTrack = useCallback(
    async () => {


        const permissions = await navigator.mediaDevices.getUserMedia({audio: true, video: true});
        const devices = await navigator.mediaDevices.enumerateDevices();
        const videoDevices = devices.filter(d => d.kind === 'videoinput');
        let videoPermissions = videoDevices.length > 1 && (CAMERA === 'Back' || CAMERA === null) ? {facingMode: 'user'} : {facingMode: 'environment'};


        if (CAMERA === null) {
            CAMERA = camFacing;
        } else {
            // alert(camFacing);
            const camF = CAMERA !== 'Front' ? 'Front' : 'Back';
            setCameraFacing(camF);
            CAMERA = camF;
        }

        return Video.createLocalVideoTrack({
            frameRate: 24,
            height: 480,
            width: 720,
            facingMode: videoPermissions.facingMode,
            name: 'camera'
        }).then(newTrack => {
            setTrack(newTrack);
            return newTrack;
        });
    },
    []
);

useEffect(() => {
    // We get a new local video track when the app loads.
    getLocalVideoTrack();
}, [getLocalVideoTrack]);

useEffect(() => {
    const handleStopped = () => setTrack(undefined);
    if (track) {
        track.on('stopped', handleStopped);
        return () => {
            track.off('stopped', handleStopped);
        };
    }
}, [track]);

return [track, getLocalVideoTrack, cameraFacing] as const;}