Xcode – Cannot preview in this file — Message send failure

I created a new SwiftUI project but the code will not load in the live preview window I get the following error every time:

Cannot preview in this file -. but when I run it on simulator it works good also for other views it works.

This is the code

import SwiftUI
import FirebaseAuth


class AppViewModel: ObservableObject {
    
    let auth = Auth.auth()
    
    @Published var LoggedIn = false
    
    var isLoggedIn: Bool{
        return auth.currentUser != nil
    }
    
    func LogIn(email: String, password: String) {
        
        auth.signIn(withEmail: email, password: password) { [weak self] result, error in
            guard result != nil, error == nil else{
                return
            }
            
            DispatchQueue.main.async {
            // Success
            self?.LoggedIn = true
            }
        }
        
    }
    
    func SignUp(email: String, password: String) {
        
        auth.createUser(withEmail: email, password: password) { [weak self] result, error in
            guard result != nil, error == nil else{
                return
            }
            DispatchQueue.main.async {
            // Success
            self?.LoggedIn = true
            }
        }
        
    }
}

struct ContentView: View {
    @EnvironmentObject var ViewModel : AppViewModel
    var body: some View {
        NavigationView {
        if ViewModel.LoggedIn {
            Text ("You are Logged In")
            } else{
                LogInView()
        }
    }
        .onAppear {
            ViewModel.LoggedIn = ViewModel.isLoggedIn
        }
    }
}

struct LogInView: View {
    @State var email = ""
    @State var password = ""
    
    @EnvironmentObject var ViewModel : AppViewModel
    var body: some View {
        
        VStack {
            
            TextField("Email Adress", text: $email)
                .disableAutocorrection(true)
                .autocapitalization(.none)
                .padding()
                .background(Color(.secondarySystemBackground))
                .cornerRadius(15)
            
            SecureField("Password", text: $password)
                .disableAutocorrection(true)
                .autocapitalization(.none)
                .padding()
                .background(Color(.secondarySystemBackground))
                .cornerRadius(15)
            
            Button(action: {
                
                guard !email.isEmpty, !password.isEmpty else{
                    return
                }
                ViewModel.LogIn(email: email, password: password)
            }) {
                Text("Log In")
                    .foregroundColor(Color.white)
                    .font(.headline)
                    .frame(maxWidth: .infinity)
                    .frame(height: 50)
                    .background(Color.accentColor)
                    .cornerRadius(20.0)
            }
            
            NavigationLink("Create an account", destination: SignUpView())
                .padding()
            

            
        }
        .padding(.horizontal, 24.0)
        .navigationTitle("Welcome")
    }
}


struct SignUpView: View {
    @State var email = ""
    @State var password = ""
    
    @EnvironmentObject var ViewModel : AppViewModel
    var body: some View {
        
        VStack {
            
            TextField("Email Adress", text: $email)
                .disableAutocorrection(true)
                .autocapitalization(.none)
                .padding()
                .background(Color(.secondarySystemBackground))
                .cornerRadius(15)
            
            SecureField("Password", text: $password)
                .disableAutocorrection(true)
                .autocapitalization(.none)
                .padding()
                .background(Color(.secondarySystemBackground))
                .cornerRadius(15)
            
            Button(action: {
                
                guard !email.isEmpty, !password.isEmpty else{
                    return
                }
                ViewModel.SignUp(email: email, password: password)
            }) {
                Text("Sign Up")
                    .foregroundColor(Color.white)
                    .font(.headline)
                    .frame(maxWidth: .infinity)
                    .frame(height: 50)
                    .background(Color.accentColor)
                    .cornerRadius(20.0)
            }
            
            
        }
        .padding(.horizontal, 24.0)
        .navigationTitle("Create an Account")
    }
}

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}