private async void VideoPlayer_PlayError(object sender, VideoPlayer.PlayErrorEventArgs e)
 {
     await Navigation.PopAsync();
 }
 /// <summary>
 /// Handle video error
 /// </summary>
 /// <param name="sender"></param>
 /// <param name="e"></param>
 private void VideoPlayer_PlayError(object sender, VideoPlayer.PlayErrorEventArgs e)
 {
     App.Current.MainPage = new OverviewPage();
 }