AudioKit 仅在真实设备上出错

Question

当我尝试在真实设备上运行我的应用程序时，出现以下错误：

“...AVAEInternal.h:109 [AVAudioEngineGraph.mm:2054:InstallTapOnNode: (err = AUGraphParser::InitializeActiveNodesInInputChain(ThisGraph, *inputNode)): 错误 -10868

...*** 由于未捕获的异常“com.apple.coreaudio.avfaudio”而终止应用程序，原因：“错误 -10868”以未捕获的 NSException 类型异常终止]”

当我尝试启动我的音频引擎时发生错误，在此之前执行的唯一代码是：

override func viewDidLoad() {
    super.viewDidLoad()
    addNavBarImage()
    print("init started ")
    guard let input = engine.input else { fatalError() }

    guard let device = engine.inputDevice else { fatalError() }
    initialDevice = device
    mic = input
    tappableNodeA = Fader(mic)
    print("input selected")
    mixer = Mixer(arpeggioSynthesizer, padSynthesizer, bassSynthesizer, drumKit)
    filter = MoogLadder(mixer)
    filter?.cutoffFrequency = 20_000
    engine.output = filter
  
    
    print("objects init")
    tracker = PitchTap(mic) { pitch, amp in
        DispatchQueue.main.async {
            self.update(pitch[0], amp[0])
        }
    }
    print("objects init finished")
    start() <-  this is the point where the code errors out, its just the try function to start the engine.
}

这可能是什么原因造成的？