ios – CarPlay Stream MP3 with netmaui not exhibiting data enjoying

I am doing an IOS App with web.MAUI and that i want to reproduce mp3 audio from url.
I am doing this with this code…

   non-public async void PlayMp3(string fileName)
    {
        strive
        {
            if (isPlaying)
            {
                participant.Pause();
                participant.Dispose();
            }

            AVPlayerItem merchandise = new AVPlayerItem(new NSUrl(fileName));
            participant = AVPlayer.FromPlayerItem(merchandise);
            participant.Play();
            isPlaying = true;

            
            var trackDuration = merchandise.Asset.Period.Seconds;
            var trackTitle = Path.GetFileNameWithoutExtension(fileName);

            var nowPlayingInfo = new MPNowPlayingInfo()
            {
                Title = trackTitle,
                AlbumTitle = "Album Identify",  
                Artist = "Take a look at Artist",
                PlaybackDuration = trackDuration,   
                ElapsedPlaybackTime = 0,            
                PlaybackRate = 1.0                  
            };

           
            MPNowPlayingInfoCenter.DefaultCenter.NowPlaying = nowPlayingInfo;

            
            System.StartTimer(TimeSpan.FromSeconds(1), () =>
            {
                if (isPlaying)
                {
                    nowPlayingInfo.ElapsedPlaybackTime = participant.CurrentTime.Seconds;
                    MPNowPlayingInfoCenter.DefaultCenter.NowPlaying = nowPlayingInfo;
                }
                return isPlaying;  // Continua fino alla positive della riproduzione
            });
            _interfaceController.PushTemplate(CPNowPlayingTemplate.SharedTemplate, true);
        }
        catch (Exception ex)
        {
            
        }
    }

The code learn the mp3, begin it and that i can hear it… CPNowPlayingTemplate is exhibiting with out data and progress bar…
Buttons earlier play and subsequent are seen however they do not reply. (however now is not matter)

I want to know why my nowPlayingInfo usually are not exhibiting…

Thanks…