我正在处理Apple音乐，并使用MPMusicPlayerController.systemMusicPlayer播放具有独特歌曲id(870697325)的音乐。有些歌曲可以正常播放，但有些则无法播放。它仅显示nil和stops。我已经打印了日志，请找到爱人。
PlaybackStateDidChange------------nil---
PlaybackStateDidChange-----------playing----
Nil items
PlayingItemDidChange-----------playing----
Current durations :- 0.0 || Player durations :- 0.0 || Progress :- nan
Current durations :- 0.0 || Player durations :- 0.0 || Progress :- nan
PlayingItemDidChange-----------playing----
audioStreamingDidLogin
Current durations :- 266.0 || Player durations :- 0.0 || Progress :- 0.0
Current durations :- 266.0 || Player durations :- 0.0 || Progress :- 0.0
Current durations :- 266.0 || Player durations :- 0.0 || Progress :- 0.0
Current durations :- 266.0 || Player durations :- 0.0 || Progress :- 0.0
Current durations :- 266.0 || Player durations :- 0.0 || Progress :- 0.0
prepareToPlay----------------
PlaybackStateDidChange----------stopped-----
2018-10-22 11:40:41.162172+0530 ChuneApp[346:27769] [Middleware] FINISH Request: <MPCPlayerRequest: 0x125e3be90 label=MPMusicPlayerController playerPath=<MPCPlayerPath: route=<MPAVEndpointRoute: 0x123e3c480 name=iPhone uid=LOCAL> bundleID=com.apple.Music [system media app] playerID=Music>> Response: (null) [0.025357s] error: Error Domain=MPRequestErrorDomain Code=1 "(null)" UserInfo={MPRequestUnderlyingErrorsUserInfoKey=(
"Error Domain=MPCPlayerRequestErrorDomain Code=2000 \"Failed to get playing identifer\" UserInfo={NSDebugDescription=Failed to get playing identifer}"
)}
2018-10-22 11:40:41.173490+0530 ChuneApp[346:26654] [Middleware] RRC <MPCPlayerRequest 0x123d12860>: Request failed with error: Error Domain=MPRequestErrorDomain Code=1 "(null)" UserInfo={MPRequestUnderlyingErrorsUserInfoKey=(
"Error Domain=MPCPlayerRequestErrorDomain Code=2000 \"Failed to get playing identifer\" UserInfo={NSDebugDescription=Failed to get playing identifer}"
)}
PlaybackStateDidChange------------nil---
apple标识是否存在问题？我可以播放Indian Apple id和UK Apple id中的同一首歌吗？任何帮助将不胜感激。