Xcode 11.4 issue: Context in environment is not connected to a persistent store coordinator

Code was working in Xcode 11.3 but after updating to 11.4, I am now getting two errors:

Context in environment is not connected to a persistent store coordinator.

Thread 1: Fatal error: No ObservableObject of type UpdateTagView found. A View.environmentObject(_:) for UpdateTagView may be missing as an ancestor of this view.

This is how I add the Objects to the Environment:

func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {

        let context = (UIApplication.shared.delegate as! AppDelegate).persistentContainer.viewContext
        context.mergePolicy = NSMergeByPropertyStoreTrumpMergePolicy

        let em = EventManager()
        let tagger = UpdateTagView()

        let contentView = ContentView()
            .environment(\.managedObjectContext, context)
            .environmentObject(em)
            .environmentObject(tagger)

        if let windowScene = scene as? UIWindowScene {
            let window = UIWindow(windowScene: windowScene)
            window.rootViewController = UIHostingController(rootView: contentView)
            self.window = window
            window.makeKeyAndVisible()
        }
    }

I call them inside the View with @EnvironmentObject:

struct ViewName: View {

    @EnvironmentObject var em: EventManager
    @EnvironmentObject var tagger: UpdateTagView

Here is an example of what is in the ObservableObject:

class UpdateTagView: ObservableObject {

    @Published var counter: Int = 0
    @Published var language: String = "English"

}

Cheers~