我想集成条带支付，但收到此错误在调用presentPaymentOptions（）之前，必须使用configureWithPaymentIntent（）或configureWithSetupIntent（）成功初始化流量控制器如何解决此错误以及它不显示任何卡

Center(
        child: ElevatedButton(
          onPressed: () {
            intpayment(email: "email,amount: 50.0);
            },
          child: Text("Pay20\$"),
        ),
      ),

Future<void> intpayment(
      {required String email, required double amount})async{
    try{
      final response= await http.post(Uri.parse("https://api.stripe.com/v1/payment_intents")
          ,body:{
            "receipt_email": email,
            "amount": amount.toInt().toString(),
            "currency": "usd"
          },
          headers: {
            'Authorization': 'Bearer ' + 'key',
            'Content-Type': 'application/x-www-form-urlencoded'
          }
      );
      final jsonresponse=jsonDecode(response.body);      Stripe.instance.initPaymentSheet(paymentSheetParameters: SetupPaymentSheetParameters(
        paymentIntentClientSecret: jsonresponse['paymentIntent'],
        merchantDisplayName: 'Zohaib',
      ));
      await Stripe.instance.presentPaymentSheet();
      Fluttertoast.showToast(
          msg: "payment successfully",
      );
    }
    catch(e){
      if (e is StripeException) {
        Fluttertoast.showToast(
            msg: "Stripe error $e",
        );
      }
      Fluttertoast.showToast(
          msg: "$e",
          toastLength: Toast.LENGTH_SHORT, );
    }
  }