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iOS Build a Playlist Browser with Swift Building the Music Library and Playlist Models Passing the Playlist Object

The placeholder did disappear when I launched but the icon image is not loaded and I only see the background color

let iconName = playlistDictionary["icon"] as! String icon = UIImage(named: "iconName") in the playlist custom model

and in the view didLoad of the PlaylistMasterViewController I put: let playlist = Playlist(index: 0) playlistImageView0.image = playlist.icon but it does not load the image corresponding to icon of the first Playlist(index: 0)