Use AVPlayer to play online audio, sometimes avplayeritema.status reports self.voicePlayer.currentItem.error Error Domain=AVFoundationErrorDomain Code=-11800 "this operation cannot be completed" UserInfo={NSLocalizedFailureReason=an unknown error（-17377）, NSLocalizedDescription=this operation cannot be completed, NSUnderlyingError=0x2805904b0 {Error Domain=NSOSStatusErrorDomain Code=-17377 "(null)"}} then ,playing the next audio is the same error. In addition, I installed an app with similar functions that can't be played. Uninstalling the app and reinstalling it won't work, but it plays normally after the phone is turned off and restarted. In my debug, I found that the proxy method shouldwaitforloadingofrequestedresource of avassetresourceloaderdelegate was not executed, and the printing URL was normal (myschedule: https://xxxxxxxx ） Which great God can give some advice