iOS: Error Domain=NSOSStatusErrorDomain Code=-50

[D4n1378472]

I receive the following errorMessage when i try to play a sound on my iPhone 7:

ERROR: CANNOT PLAY MUSIC IN BACKGROUND. Message from code: "Error Domain=NSOSStatusErrorDomain Code=-50 "(null)""

But the app never is in the background.

`
AudioPlayer _audioPlugin = AudioPlayer();

await _audioPlugin.play(
'assets/audio/test.mp3',
isLocal: true,
);
`

Are there any solutions for this?