AVPlayerItem 错误：操作已停止

Question

我想用 AVPlayer 播放 YouTube 视频。

这是我的代码：

let playerItem = AVPlayerItem(asset: AVAsset(url:URL(string: "https://www.youtube.com/watch?v=xxxxxxxxx")!))
player = AVPlayer(playerItem : playerItem)
playerLayer = AVPlayerLayer(player: player)
playerLayer.frame = self.view.bounds
player.play()

将AVPlayerItemStatus传递到与此错误失败：

Error Domain=AVFoundationErrorDomain Code=-11850 "Operation Stopped" UserInfo={NSUnderlyingError=0x1702443e0 {Error Domain=NSOSStatusErrorDomain Code=-12939 "(null)"}, NSLocalizedFailureReason=The server is not correctly configured., NSLocalizedDescription=Operation Stopped}

有人能帮我解决这个问题吗？

PS：当我改变AVPlayer到AVQueuePlayer它的工作原理！