I am getting the error referenced in the title, and I've tried a few different ways to fix it, but nothing seems to work. Any help would be much appreciated!

The error appears in my (appname).swift file right at the @main line. I've made sure all views have the @Environment(\.managedObjectContext) var managedObjectContext property, and I've tried passing the managedObjectContext through the view hierarchy.

This is what I currently have for my appname.swift file:

@main
struct devManageApp: App {
    let persistenceController = PersistenceController.shared

    @Environment(\.managedObjectContext) var managedObjectContext

    var body: some Scene {
        WindowGroup {
            LockScreen()
                .environment(\.managedObjectContext, self.managedObjectContext)

        }
    }
}

And in the intial view (removed some unrelated code for conciseness):

struct LockScreen: View {

    @State private var isUnlocked = false

    @Environment(\.managedObjectContext) var managedObjectContext

    var body: some View {
        NavigationView {
        VStack{
            Image(systemName: "faceid").resizable().frame(width: 100, height: 100, alignment: .center).onAppear {
                authenticate()
            }
            if isUnlocked {
                NavigationLink(destination: ClientList(managedObjectContext: _managedObjectContext)
                                .environment(\.managedObjectContext, self.managedObjectContext)
                )
                {
                    Text("Open")
                }
            } else {
                Text("Locked")
            }
        }
        }   
    }  
}

@roosterboy What an easy fix! I've learned so much from this community, and I really appreciate it. Thanks much!