The error that caused the player item to fail.
- iOS 4.0+
- macOS 10.7+
- UIKit for Mac 13.0+Beta
- tvOS 9.0+
- watchOS 6.0+Beta
The value of this property is an error that describes what caused the player item to no longer be able to be played.
If the receiver's status is not
AVPlayer, the value of this property is