Fluttterでappleのサインインができない

puvのsign_in_with_appleを使って、appleのログイン機能の実装を行なっているのですが、パスワードの入力画面でローディングが周り続けて先に進みません。
xcodeでのcapabilityの設定や、apple developer programでのidentifyの設定も一応、完了しています。

dart
1String generateNonce([int length = 32]) {
2    final charset =
3        '0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._';
4    final random = Random.secure();
5    return List.generate(length, (_) => charset[random.nextInt(charset.length)])
6        .join();
7  }
8
9  /// Returns the sha256 hash of [input] in hex notation.
10  String sha256ofString(String input) {
11    final bytes = utf8.encode(input);
12    final digest = sha256.convert(bytes);
13    return digest.toString();
14  }
15
16  Future<UserCredential> signWithApple() async {
17    final rawnonce = generateNonce();
18    final nonce = sha256ofString(rawnonce);
19
20    final appleCredential = await SignInWithApple.getAppleIDCredential(
21      scopes: [
22        AppleIDAuthorizationScopes.email,
23        AppleIDAuthorizationScopes.fullName,
24      ],
25      nonce: nonce,
26    );
27
28    final oauthCredential = OAuthProvider("apple.con").credential(
29      idToken: appleCredential.identityToken,
30      rawNonce: rawnonce,
31    );
32
33    return await FirebaseAuth.instance.signInWithCredential(oauthCredential);
34  }
35参考にした記事など
36https://pub.dev/packages/sign_in_with_apple/install
37https://firebase.flutter.dev/docs/auth/social/#apple
38https://firebase.google.com/docs/auth/ios/apple#configure-sign-in-with-apple
39
40デバッグ内容と自身の考察puvのsign_in_with_appleを使って、appleのログイン機能の実装を行なっているのですが、パスワードの入力画面でローディングが周り続けて先に進みません。
41xcodeでのcapabilityの設定や、apple developer programでのidentifyの設定も一応、完了しています。
42Dvw198aHnDSME6A1631149922_1631150031
43
44String generateNonce([int length = 32]) {
45    final charset =
46        '0123456789ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwxyz-._';
47    final random = Random.secure();
48    return List.generate(length, (_) => charset[random.nextInt(charset.length)])
49        .join();
50  }
51
52  /// Returns the sha256 hash of [input] in hex notation.
53  String sha256ofString(String input) {
54    final bytes = utf8.encode(input);
55    final digest = sha256.convert(bytes);
56    return digest.toString();
57  }
58
59  Future<UserCredential> signWithApple() async {
60    final rawnonce = generateNonce();
61    final nonce = sha256ofString(rawnonce);
62    
63    try {
64     final appleCredential = await SignInWithApple.getAppleIDCredential(
65       scopes: [
66         AppleIDAuthorizationScopes.email,
67         AppleIDAuthorizationScopes.fullName,
68       ],
69       nonce: nonce,
70     );
71
72     final oauthCredential = OAuthProvider("apple.con").credential(
73       idToken: appleCredential.identityToken,
74       rawNonce: rawnonce,
75     );
76 
77     return await FirebaseAuth.instance.signInWithCredential(oauthCredential);
78   } catch (e) {
79     print(e);
80   }
81  }