[Mobile] Parsing error when calling createPaymentMethod for US bank account

[SincerelyFaust]

Describe the bug
I get a parsing error when calling the createPaymentMethod function and it says this:

type 'String' is not a subtype of type 'List<dynamic>?' in type cast

To Reproduce
Steps to reproduce the behavior:

1. Create token for US bank account
2. Call createPaymentMethod
3. Get error

Expected behavior
When creating a payment method with EU bank account using PaymentMethodParams.sepaDebit it works flawlessly, however, when creating an US one with PaymentMethodParams.usBankAccount I get the error.

Smartphone / tablet

• Device: [iPhone 12 Pro Max]
• OS: [iOS 17.5.1]
• Package version: [^10.1.1]
• Flutter version [3.16.8]

Additional context
Here's my code:

  Future<stripe.TokenData?> createBankAccountToken({
    required String accountNumber,
    required String accountHolderName,
    String? routingNumber,
    required String country,
    required String currency,
    required String email,
  }) async {
    try {
      final tokenData = await stripe.Stripe.instance.createToken(
        stripe.CreateTokenParams.bankAccount(
          params: stripe.BankAccountTokenParams(
            accountNumber: accountNumber,
            accountHolderName: accountHolderName,
            routingNumber: routingNumber,
            country: country,
            currency: currency,
            accountHolderType: stripe.BankAccountHolderType.Individual,
          ),
        ),
      );

      if (country == "US") {
        await createPaymentMethod(
          method: stripe.PaymentMethodParams.usBankAccount(
            paymentMethodData: stripe.PaymentMethodDataUsBank(
                accountNumber: accountNumber,
                routingNumber: routingNumber,
                accountHolderType: stripe.BankAccountHolderType.Individual,
                billingDetails: stripe.BillingDetails(
                  name: accountHolderName,
                )),
          ),
        );
      } else {
        await createPaymentMethod(
          method: stripe.PaymentMethodParams.sepaDebit(
            paymentMethodData: stripe.PaymentMethodDataSepa(
                iban: accountNumber,
                billingDetails: stripe.BillingDetails(
                  name: accountHolderName,
                  email: email,
                )),
          ),
        );
      }

      return tokenData;
    } catch (e) {
      if (e is stripe.StripeException) {
        showErrorToastMessage(
          context: RoutingManager.instance.context!,
          title: "Stripe Error",
          textMessage: e.error.message,
        );
        throw e.error;
      } else {
        showErrorToastMessage(
          context: RoutingManager.instance.context!,
          title: "App Error",
          textMessage: e.toString(),
        );
        throw e.toString();
      }
    }
  }
  }

[remonh87]

Good catch the return type was incorrect this will be fixed in the next version