CoreData and SwiftUI: Context in environment is not connected to a persistent store coordinator

Environment values like your moc are automatically passed only to other views in the hierarchy. So if you show a sheet or anything that is not part of your view hierarchy you’ll lose the environment and you will need to pass the moc to the new hierarchy, like you did for ContentView. Check this code snippet:

.sheet(isPresented: self.$showSheet) {
            SheetView()
                .environment(\.managedObjectContext, self.moc)
        }