I just created code for audio player. It works in Xcode 11.5 perfectly. Unfortunately, when I use Xcode 12 beta, it does not work like in Xcode 11.5. I got too many warnings. Here is my code. struct ContentView: View {   @ObservedObject var player: Player = .shareInstance   var body: some View {     Button(action: {       self.player.play()     }) {       Text("Play")     }   } } class Player: ObservableObject {   static var shareInstance = Player()   var audioPlayer: AVPlayer!   func play() {     guard let url = URL(string: "https://www.soundhelix.com/examples/mp3/SoundHelix-Song-1.mp3") else {       print("Invalid url")       return     }     let playerItem = AVPlayerItem(url: url)     audioPlayer = AVPlayer(playerItem: playerItem)     audioPlayer.play()   } } Warnings 2020-07-03 09:45:28.914989+0630 AudioPlayer[96225:4422734] [] nwprotocolgetquicimageblockinvoke dlopen libquic failed 2020-07-03 09:45:30.336438+0630 AudioPlayer[96225:4422744] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x600001f3a720> F8BB1C28-BAE8-11D6-9C31-00039315CD46 2020-07-03 09:45:30.482683+0630 AudioPlayer[96225:4422869] HALBIOBufferManagerClient::GetIOBuffer: the stream index is out of range 2020-07-03 09:45:30.483346+0630 AudioPlayer[96225:4422869] HALBIOBufferManagerClient::GetIOBuffer: the stream index is out of range 2020-07-03 09:45:30.495630+0630 AudioPlayer[96225:4422869] [aqme] 255: AQDefaultDevice (1): output stream 0: null buffer 2020-07-03 09:45:30.496099+0630 AudioPlayer[96225:4422869] [aqme] 1778: EXCEPTION thrown (-50): error != 0 2020-07-03 09:45:45.485455+0630 AudioPlayer[96225:4422744] [aqme] 182: timed out after 15.000s (0 1); suspension count=0 (IOSuspensions: ) 2020-07-03 09:45:45.486826+0630 AudioPlayer[96225:4422744] 244: CAUISoundClientBase::StartPlaying: AddRunningClient failed (status = -66681). 2020-07-03 09:45:45.615673+0630 AudioPlayer[96225:4422989] HALBIOBufferManagerClient::GetIOBuffer: the stream index is out of range 2020-07-03 09:45:45.616021+0630 AudioPlayer[96225:4422989] HALBIOBufferManager_Client::GetIOBuffer: the stream index is out of range 2020-07-03 09:45:45.628154+0630 AudioPlayer[96225:4422989] [aqme] 255: AQDefaultDevice (1): output stream 0: null buffer 2020-07-03 09:45:45.628978+0630 AudioPlayer[96225:4422989] [aqme] 1778: EXCEPTION thrown (-50): error != 0 2020-07-03 09:46:00.617994+0630 AudioPlayer[96225:4422986] [aqme] 182: timed out after 15.000s (1 2); suspension count=0 (IOSuspensions: ) Thanks