我试图在Flutter中实现条纹支付方法，但它给出了一个问题
flutter: Exception/DISPLAYPAYMENTSHEET==> StripeException(error: LocalizedErrorMessage(code: FailureCode.Failed, localizedMessage: No payment sheet has been initialized yet, message: No payment sheet has been initialized yet, stripeErrorCode: null, declineCode: null, type: null)) #0 MethodChannelStripe._parsePaymentSheetResult (package:stripe_platform_interface/src/method_channel_stripe.dart:310:11) #1 MethodChannelStripe.presentPaymentSheet (package:stripe_platform_interface/src/method_channel_stripe.dart:246:14) <asynchronous suspension> #2 Stripe.presentPaymentSheet (package:flutter_stripe/src/stripe.dart:367:12) <asynchronous suspension> #3 FutureExtensions.onError.<anonymous closure> (dart:async/future.dart:1049:15) <asynchronous suspension>
我检查了我在Android上的所有构建设置以及iOS设置，一切都很好。这里是我的条纹支付方式的代码

Future<void> makePayment() async {
  try {
    paymentIntentData = await createPaymentIntent('20', 'USD');
    await Stripe.instance
        .initPaymentSheet(
            paymentSheetParameters: SetupPaymentSheetParameters(
          paymentIntentClientSecret:
              paymentIntentData != null ? ['client_secret'].join('') : null,
          style: ThemeMode.light,
          merchantDisplayName: 'John',
        ))
        .then((value) {});

   await displayPaymentSheet();
  } catch (e) {
    if (kDebugMode) {
      print(e.toString());
    }
  }
}

displayPaymentSheet() async {
  try {
    await Stripe.instance.presentPaymentSheet().then((newValue) {
      if (kDebugMode) {
        print('payment intent${paymentIntentData!['id']}');
      }
      print('payment intent${paymentIntentData!['client_secret']}');
      print('payment intent${paymentIntentData!['amount']}');
      print('payment intent$paymentIntentData');
      //orderPlaceApi(paymentIntentData!['id'].toString());
      ScaffoldMessenger.of(context).showSnackBar(const SnackBar(
          content: Text("Congratulation you have buy 20 Credits")));

      paymentIntentData = null;
    }).onError((error, stackTrace) {
      if (kDebugMode) {
        print('Exception/DISPLAYPAYMENTSHEET==> $error $stackTrace');
      }
    });
  } on StripeException catch (e) {
    if (kDebugMode) {
      print('Exception/DISPLAYPAYMENTSHEET==> $e');
    }
    showDialog(
        context: context,
        builder: (_) => const AlertDialog(
              content: Text("Cancelled "),
            ));
  } catch (e) {
    print('$e');
  }
}

createPaymentIntent(String amount, String currency) async {
  try {
    Map<String, dynamic> body = {
      'amount': calculateAmount(amount),
      'currency': currency,
      'payment_method_types[]': 'card'
    };
    var response = await http.post(
        Uri.parse('https://api.stripe.com/v1/payment_intents'),
        body: body,
        headers: {
          'Authorization':
              'Bearer sk_test_key,
          'Content-Type': 'application/x-www-form-urlencoded'
        });

    return jsonDecode(response.body.toString());
  } catch (e) {
    print(e.toString());
  }
}

calculateAmount(String amount) {
  final price = int.parse(amount) * 100;
  return price.toString();
}

这是我主要文件

void main() async {

  WidgetsFlutterBinding.ensureInitialized();
  Stripe.publishableKey = 'pk_test_';
  Stripe.merchantIdentifier = 'any string works';
  await Stripe.instance.applySettings();

  
  runApp(const MyApp());
}

请帮助我解决这个问题，它不能在真实的的设备上工作，不能在Android和iOS上工作。我检查了我在Android上的所有构建设置以及iOS设置，一切都很好。