I have an issue with my first challenge. I've added a helpview:

      HStack {
                    NavigationLink(
                        destination: HelpView(),
                        isActive: $isShowingHelp,
                        label: {
                            Text("  Help  ")
                                .padding()
                                .background(Color.blue)
                                .foregroundColor(.white)
                                .cornerRadius(8)
                        }
                    )

Throws this warning:

 'init(destination:isActive:label:)' was deprecated in iOS 16.0: use NavigationLink(value:label:), 
 or navigationDestination(isPresented:destination:), inside a NavigationStack or NavigationSplitView                   

Works fine, tho. How can I fix this?

Try this

struct ContentView: View {
    @State private var isShowingHelp = false

    var body: some View {
        NavigationStack {
            Button {
                isShowingHelp.toggle()
            } label: {
                Text("Help")
                    .padding()
                    .background(Color.blue)
                    .foregroundColor(.white)
                    .cornerRadius(8)
            }
            .navigationDestination(isPresented: $isShowingHelp) {
                HelpView()
            }
        }
    }
}

Thanks for the reply,

Throws this error:

Closure containing a declaration cannot be used with result builder 'ViewBuilder'

Edit: Fixed! Thanks so much, I think I misapplied your fix, started from scratch and the error is gone.

The code that above does not give any errors. So will be something esle.