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I am finding it impossible to play a library playlist using the MPMusicPlayerController class. I can play catalog playlists without any issues, but and user library specific playlist or song fails with "failed to prepare for play".  MPMusicPlayerController.applicationMusicPlayer.setQueue(with: [playlistId]) MPMusicPlayerController.applicationMusicPlayer.play() The above works so easily for playlists retrieved with: https://api.music.apple.com/v1/catalog/au/playlists. When trying to play a playlist from https://api.music.apple.com/v1/me/library/playlists it fails. Any ideas?

Has anyone tried converting a MPMediaItem artwork to base 64? Most of the solutions I tried ended up in a plain black image.