Unable to access "Subscriptions", "Watch Later", "Favorites", but can access other named playlists and play those selections

Something must have changed on the YT backend suddenly I can still navigate and play from any named playlist, but if I select any of the "built-in" options like Subscriptions, even the "Watch Later" playlist, favorites, I get a blank box that says "Error" and the plugin crashes back to Plex menu.