VideoScalingMode causes exception, even though property should be valid about exoplayerxamarin HOT 7 CLOSED

using System;
using Com.Google.Android.Exoplayer2.UI;
using Com.Google.Android.Exoplayer2;
using Com.Google.Android.Exoplayer2.Upstream;
using Android.Content;
using Com.Google.Android.Exoplayer2.Trackselection;
using Com.Google.Android.Exoplayer2.Util;
using Com.Google.Android.Exoplayer2.Source;
using Com.Google.Android.Exoplayer2.Extractor;
namespace MyApp.Droid.Services
{
    public class ExoPlayerService
    {
        public static IExoPlayer PrepareVideo(ref PlayerView playerView, string targetPath, Context context) 
        {
            //Track selector
            var bandwidthMeter = new DefaultBandwidthMeter();
            var videoTrackFactory = new AdaptiveTrackSelection.Factory(bandwidthMeter);
            var trackSelector = new DefaultTrackSelector(videoTrackFactory);
            
            //ExoPlayer
            var exo = ExoPlayerFactory.NewSimpleInstance(context, trackSelector);
            exo.RepeatMode = Player.RepeatModeAll;
            exo.PlayWhenReady = true;
            exo.VideoScalingMode = C.VideoScalingModeScaleToFit; //Scale to fit the frame
            playerView.UseController = false;
            playerView.Player = exo;
            
            //Media Source
            var dataSourceFactory = new DefaultDataSourceFactory(
                context, 
                Util.GetUserAgent(
                    context, 
                    context.GetString(Resource.String.app_name)
                )
            );
            var mediaSource = new ExtractorMediaSource(Android.Net.Uri.Parse(targetPath), dataSourceFactory, new DefaultExtractorsFactory(), null, null);
            exo.Prepare(mediaSource);
            return exo;
        }
    }
}