iOS 14 WidgetKit + Core Data/CloudKit

I am trying to build a widget for iOS 14 using WidgetKit and CoreData/CloudKit instance on a new Xcode 12 project.

1. I have added my CoreData's File Target Membership to both my app and widget

2. I have added an App Group to my main App Target.

3. My Persistence.swift looks like this:

Code Block 
init(inMemory: Bool = false) {
    container = NSPersistentCloudKitContainer(name: "test-cd")
    let storeURL = URL.storeURL(for: "group.test-data", databaseName: "test-cd")
    let storeDescription = NSPersistentStoreDescription(url: storeURL)
    container.persistentStoreDescriptions = [storeDescription]

4. My widget looks like this:

Code Block 
struct Provider: TimelineProvider {
  var managedObjectContext : NSManagedObjectContext
   
  init(context : NSManagedObjectContext) {
    self.managedObjectContext = context
  }
...
}

Code Block 
@main
struct test_widget: Widget {
  let kind: String = "test_widget"
   
  var persistentContainer = PersistenceController.shared.container
  var body: some WidgetConfiguration {
    StaticConfiguration(kind: kind, provider: Provider(context: persistentContainer.viewContext)) { entry in
      test_widgetEntryView(entry: entry)
    }
    .configurationDisplayName("My Widget")
    .description("This is an example widget.")
  }
}

5. And my widget's entry view looks like this:

Code Block 
struct test_widgetEntryView : View {
  @FetchRequest(
    sortDescriptors: [NSSortDescriptor(keyPath: \Item.checked, ascending: true)],
    animation: .default)
  private var items: FetchedResults<Item>
   
  var entry: Provider.Entry
  var body: some View {
    LazyVStack {
      ForEach(items) { item in
        HStack {
			Text("\(item.name)")
		}
      }
    }
    .padding(.horizontal)
  }
}

But the app crashes on ForEach(items) as soon as it is launched:

Thread 1: EXCBADINSTRUCTION (code=EXCI386INVOP, subcode=0x0)

Any suggestions as to what is going wrong here?