exit when playing

**_log :_**
2020-08-28 00:47:03.960|Info|PlaybackService.PlaybackFinishedHandler|1240|Track finished: G:\音乐\saved muisc\03 - The Innocence Mission - 500 Miles.mp3
2020-08-28 00:47:04.181|Info|PlaybackService.TryPlayAsync|1130|Playing the file G:\音乐\saved muisc\03 - The Innocence Mission - 500 Miles.mp3. EventMode=False, ExclusiveMode=False, LoopMode=All, Shuffle=False
2020-08-28 00:47:04.902|Error|App.xaml.ExecuteEmergencyStop|555|Unhandled Exception. Exception:
System.ObjectDisposedException: 无法访问已释放的对象。
在 System.Threading.TimerQueueTimer.Change(UInt32 dueTime, UInt32 period)
在 System.Threading.Timer.Change(Int32 dueTime, Int32 period)
在 System.Timers.Timer.set_Enabled(Boolean value)
在 Dopamine.ViewModels.Common.LyricsControlViewModel.d__38.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---
在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
在 System.Threading.ThreadPoolWorkQueue.Dispatch()

Stack trace:
在 System.Threading.TimerQueueTimer.Change(UInt32 dueTime, UInt32 period)
在 System.Threading.Timer.Change(Int32 dueTime, Int32 period)
在 System.Timers.Timer.set_Enabled(Boolean value)
在 Dopamine.ViewModels.Common.LyricsControlViewModel.d__38.MoveNext()
--- 引发异常的上一位置中堆栈跟踪的末尾 ---
在 System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
在 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx)
在 System.Threading.QueueUserWorkItemCallback.System.Threading.IThreadPoolWorkItem.ExecuteWorkItem()
在 System.Threading.ThreadPoolWorkQueue.Dispatch()

2020-08-28 00:47:04.902|Info|App.xaml.ExecuteEmergencyStop|558|### FORCED STOP of Dopamine, version 2.0.3.4000 ###
2020-08-28 00:47:08.875|Info|PlaybackService.SavePlaybackCountersAsync|542|Saved track statistics
2020-08-28 00:47:09.131|Error|PlaylistService.GetTracksAsync|503|playlist is null. Returning empty list of tracks.
2020-08-28 00:47:14.835|Info|IndexingService.CheckCollectionAsync|143|+++ STARTED CHECKING COLLECTION +++
2020-08-28 00:47:15.965|Info|IndexingService.IndexTracksAsync|274|+++ STARTED INDEXING COLLECTION +++
2020-08-28 00:47:15.998|Info|IndexingService.IndexTracksAsync|290|Tracks removed: 0. Time required: 33 ms +++
2020-08-28 00:47:16.090|Info|IndexingService.IndexTracksAsync|300|Tracks updated: 0. Time required: 61 ms +++
2020-08-28 00:47:16.092|Info|IndexingService.IndexTracksAsync|307|Tracks added: 0. Time required: 2 ms +++
2020-08-28 00:47:16.092|Info|IndexingService.IndexTracksAsync|314|+++ FINISHED INDEXING COLLECTION: Tracks removed: 0. Tracks updated: 0. Tracks added: 0. Time required: 127 ms +++
2020-08-28 00:47:16.095|Info|IndexingService.CleanupArtworkAsync|651|+++ STARTED CLEANING UP ARTWORK +++
2020-08-28 00:47:16.108|Info|IndexingService.CleanupArtworkAsync|672|+++ FINISHED CLEANING UP ARTWORK: Covers deleted from database: 0. Covers deleted from disk: 0. Time required: ms +++
2020-08-28 00:47:16.109|Info|IndexingService.AddArtworkInBackgroundAsync|707|+++ STARTED ADDING ARTWORK IN THE BACKGROUND +++
2020-08-28 00:47:16.115|Error|IndexingService.AddArtworkInBackgroundAsync|815|+++ FINISHED ADDING ARTWORK IN THE BACKGROUND. Time required: 6 ms +++