MPMusicPlayer Domain Error = MPErrorDomain Code = 4?

Question

I have a problem with the music player, most songs give Error

Domain Error = MPErrorDomain Code = 4

The testing device has a subscription to Apple music, and the tracks give an error in the application, which they work perfectly in the Apple music application!

Here is the code:

let applicationMusicPlayer = MPMusicPlayerController.systemMusicPlayer()
 applicationMusicPlayer.setQueueWithStoreIDs([ID])

      if #available(iOS 10.1, *)
      {

        applicationMusicPlayer.prepareToPlay { (error) in

            if (error != nil)
            {
                print("[MUSIC PLAYER] Error preparing : \(String(describing: error))")
                return
            }else
            {
                self.start_timer();
                self.applicationMusicPlayer.play()
            }

        }

      }else
      //Play directly ios below version 10.1
      {
        self.applicationMusicPlayer.play()
      }

    }

But what I tried when the track gives this error, I went to the Apple music player and played from there, worked there, then I went back to my application and played it from my application, and it worked fine, so I need to go to Apple music app to play non-playing tracks in my app to make them work in my app! It is so strange that you think why?

PS: the testing device has a subscription to Apple music

Answer 1

, :

DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(5)) {
    // Code
}

.

5 ,