Today, Spotify made a change to their API that removed access to the following via the Web API:
https://developer.spotify.com/blog/2024-11-27-changes-to-the-web-api
In addition to likely breaking GetRelatedArtists, GetRecommendations, GetAudioAnalysis, GetAudioFeatures, FeaturedPlaylists, and GetCategoryPlaylists, now GetPlaylistsForUser returns an uninitizalized SimplePlaylist object (not null, but an empty object) for any playlist in SimplePlaylistPage.Playlists owned by Spotify because the Spotify Web API now returns null in the array for those playlists in the API call. Also, the SimplePlaylistPage.Total field now lies because the value reported by the API includes the nulls it returns in the count.