エラー：Sign in with Appleで「登録が完了しませんでした」の解決方法！

Hello,

The issues we previously identified still need your attention.

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Guideline 2.1 - Performance - App Completeness

We discovered one or more bugs in your app. Specifically, we were still unable to Sign up with Apple and received a message stating ”登録を完了できませんでした”

import UIKit
import AuthenticationServices

final class AuthViewController: UIViewController {
    
    @IBOutlet    private weak var buttonView: UIView!
  
    // SetUp
    func setupProviderLoginView() {
        let authorizationButton = ASAuthorizationAppleIDButton()
        authorizationButton.addTarget(self, action: #selector(handleAuthorizationAppleIDButtonPress), for: .touchUpInside)
        authorizationButton.bounds = CGRect(x: 100, y: 1000, width: 200, height: 40)
        buttonView.addSubview(authorizationButton)
    }
    
    // Action
    @objc        func handleAuthorizationAppleIDButtonPress() {
        let appleIDProvider = ASAuthorizationAppleIDProvider()
        let request = appleIDProvider.createRequest()
        request.requestedScopes = [.fullName, .email]
        
        let authorizationController = ASAuthorizationController(authorizationRequests: [request])
        authorizationController.delegate = self
        authorizationController.presentationContextProvider = self
        authorizationController.performRequests()
    }
    
    override func viewDidLoad() {
        super.viewDidLoad()
        setupProviderLoginView()
    }
}

// MARK: - ASAuthorizationControllerDelegate
extension AuthViewController: ASAuthorizationControllerDelegate {
    
    func authorizationController(controller: ASAuthorizationController,didCompleteWithAuthorization authorization: ASAuthorization ) {
        // ログイン後に実行したい処理
    }
    
    func authorizationController(controller: ASAuthorizationController,didCompleteWithError error: Error) {
       // エラー操作
    }
}

// MARK: - ASAuthorizationControllerPresentationContextProviding
extension AuthViewController: ASAuthorizationControllerPresentationContextProviding {
    func presentationAnchor(for controller: ASAuthorizationController) -> ASPresentationAnchor {
        return self.view.window!
    }
}

import SwiftUI
import CryptoKit
import FirebaseAuth
import AuthenticationServices

struct AppleAuthView: View {

    @Environment(\.colorScheme) var colorScheme
    
    var isDarkMode: Bool { colorScheme == .dark }
    
    var body: some View {
        VStack {
            SignInWithAppleButton(.signIn) { request in
                request.requestedScopes = [.fullName, .email]
            } onCompletion: { authResults in
                switch authResults {
                case .success(let authResults): 
                    print("完了")
                    break
                case .failure(let error):
                    print(error.localizedDescription)
                }
            }
            .signInWithAppleButtonStyle(isDarkMode ? .white : .black)
            .frame(width: 224, height: 40)
        }
    }
}