There's a firebase bug causing this. It's documented here https://github.com/firebase/firebase-ios-sdk/issues/6574

Thanks OOPer for the feedback. I've gone ahead and changed isFavorite to favoriteRunClubItem Here's the definition public class FavoriteItem:NSManagedObject, Identifiable {   @NSManaged public var isFavorite:Bool   @NSManaged public var misc:String?   @NSManaged public var name:String?   @NSManaged public var location:String?   @NSManaged public var date:String?   @NSManaged public var category:String?   @NSManaged public var dayofweek:Int   @NSManaged public var link:String?   @NSManaged public var hour:Int   @NSManaged public var minute:Int } extension FavoriteItem {   static func getAllFavorites() -> NSFetchRequest<FavoriteItem>{     let request:NSFetchRequest<FavoriteItem> = FavoriteItem.fetchRequest() as! NSFetchRequest<FavoriteItem>           let sortDescriptor = NSSortDescriptor(key: "category", ascending: true)     request.sortDescriptors = [sortDescriptor]     return request   } }

I'm a goof. I went back and looked at other areas of my code and you're correct. Thank you!