MPMusicPlayer Error Domain=MPErrorDomain Code=4? - ios

Question

I am having issue with Music player, most of the songs gives Error
Error Domain=MPErrorDomain Code=4
The testing device has Apple music subscription and the tracks gives error on the app they are working fine in Apple music app!
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've tried, when the track gives this error, I went to Apple music player and played it from there its worked, then I came back to my app and play it from my app its worked also fine, so I need to go to Apple music app to play tracks not playing in my app to make them work in my app! That's so weird any idea why?
PS: the testing device has Apple music subscription

Answer 1

I had some similar problems when adding songs to a playlist, solved it by using:
DispatchQueue.main.asyncAfter(deadline: .now() + .seconds(5)) {
// Code
}
i would play around with waiting a bit before or after preparing.
5 seconds may be too much, but you can start from there