Ok. I posted It below so I was able to fit all the code in it.

Of course! The error occurs on the line that says .environmentObject(registrationViewModel) import SwiftUI struct ContentView: View { @StateObject var viewModel = ContentViewModel() @StateObject var registrationViewModel = RegistrationViewModel() var body: some View { Group { if viewModel.userSession == nil { LoginView() .environmentObject(registrationViewModel) } else if let currentUser = viewModel.currentUser { MainTabView(user: currentUser) } } } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } }