ios – Can anybody resolve this lacking argument for parameter error?

Good day,

I’am studying swiftUI since this week however at this level I’am severely disillusioned. I have been making an attempt to repair this situation since +4hrs, however I do not get it…

Perhaps you guys will assist me..

▶︎ HomePageView.swift:63:37 Lacking argument for parameter ‘forUser’ in name

▶︎ HomePageView.swift:375:22 Lacking argument for parameter ‘dataManager’ in name

▶︎ LoginPageView.swift:28:38 Lacking argument for parameter ‘dataManager’ in name

▶︎ LoginPageView.swift:131:26 Worth of sort ‘LoginPageView’ has no member ‘getUserData’

listed here are the code snippets…

LoginPageView.swift

import SwiftUI
import CoreData
import Firebase

struct LoginPageView: View {
    @State personal var e-mail: String = ""
    @State personal var password: String = ""
    @State personal var isAuthenticated = false
    @State personal var showAlert = false
    @State personal var errorMessage: String = ""
    @Atmosphere(.scenePhase) personal var scenePhase // Beobachtet den Lebenszyklus der Szene

    @ObservedObject var dataManager = UserDataManager()
    
    var physique: some View {
            NavigationView {
                ZStack {
                    Coloration(hex: "f6f1eb").edgesIgnoringSafeArea(.all)

                    if isAuthenticated {
                        HomePageView()
                    } else {
                        loginForm
                    }
                }
                .navigationTitle(isAuthenticated ? "" : "")
                .navigationBarHidden(isAuthenticated)
                .onChange(of: scenePhase) { newPhase in
                    if newPhase == .background {
                        logout()
                    }
                }
                .onAppear {
                    checkAuthentication()
                }
            }
        }

HomePageView.swift

struct HomePageView: View {
    @ObservedObject var dataManager: UserDataManager
        
        init(dataManager: UserDataManager) {
            self.dataManager = dataManager
        }
        
    
    var physique: some View {
        NavigationView {
            ZStack {
                Coloration(hex: "f6f1eb")
                    .edgesIgnoringSafeArea(.all)
                VStack {
                    UserProfileView(userRole: dataManager.userRole, userEmail: dataManager.userEmail)
                        .body(top: 100)
                    Divider()
                    SidebarView()
                }
            }
        }
        .onAppear {
            dataManager.getUserData()
            
        }
        .navigationBarTitle("Cut up View")
    }
}

struct HomePageView_Previews: PreviewProvider {
    static var previews: some View {
        HomePageView()
    }
}

DataManager.swift

class UserDataManager: ObservableObject {
    @Revealed var userRole: String = "Loading..."
    @Revealed var userEmail: String = "Loading..."
    
    func getUserData(forUser userId: String) {
        let db = Firestore.firestore()
        db.assortment("UserRole").doc(userId).getDocument { (doc, error) in
            if let doc = doc, doc.exists {
                if let knowledge = doc.knowledge() {
                    if let position = knowledge["Role"] as? String, let e-mail = knowledge["EMailAddress"] as? String {
                        // Speichern Sie die Benutzerrolle und E-Mail-Adresse in Ihrem UserDataManager
                        self.userRole = position
                        self.userEmail = e-mail
                    }
                }
            } else {
                print("Doc doesn't exist")
            }
        }
    }
}

Thanks upfront to your assist and insights. I respect your help and stay up for your responses.