type 'String' is not a subtype of type 'int' - Also unable to fetch banks

[kcibdev]

I integrated flutterwave in my flutter app. when in debug mode everything was working fine but after i decided to go live i keep getting errors Am using the following payment methods

Pay with Account: In this one am not able to get the list of banks instead it throws the error

   [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Flutterwave Error: Flutterwave Error: Unable to fetch banks. Please contact support           

Pay with Card when i try to pay with card it says Merchant is not enabled for Rave v3

Pay with Bank Transfer When i click pay on this i get type 'String' is not a subtype of type 'int'

Pay with USSD Here they are only seven available banks and i can't verify transaction

My Dependencies

flutterwave: ^1.0.1
tripledes: ^2.1.0
webview_flutter: ^2.0.10

My Code

beginPayment(BuildContext context, Map<String, dynamic> data) async {
  final Flutterwave flutterwave = Flutterwave.forUIPayment(
      context: context,
      encryptionKey: data['encKey'],
      publicKey: data['pKey'],
      currency: data['currency'],
      amount: data['amount'],
      email: data['mail'],
      fullName: data['name'],
      txRef: data['txref'],
      isDebugMode: false,
      phoneNumber: data['number'],
      acceptCardPayment: true,
      acceptUSSDPayment: true,
      acceptAccountPayment: true,
      acceptFrancophoneMobileMoney: false,
      acceptGhanaPayment: false,
      acceptMpesaPayment: false,
      acceptRwandaMoneyPayment: false,
      acceptBankTransfer: true,
      acceptUgandaPayment: false,
      acceptZambiaPayment: false);

  try {
    final ChargeResponse response = await flutterwave.initializeForUiPayments();
    if (response == null) {
      fToast("Payment not completed", errorRed);
    } else {
      final isSuccessful = checkPaymentIsSuccessful(response, data);

      if (isSuccessful) {
        fToast("Payment Successful", pop);
      } else {
        fToast("Error processing payment", errorRed);
      }
    }
  } catch (error, stacktrace) {
    snackBar(context, "Error", error, errorRed);
  }
}

Flutter doctor -v

[√] Flutter (Channel stable, 2.2.3, on Microsoft Windows [Version 6.3.9600], locale en-US)
    • Flutter version 2.2.3 at D:\flutter\Sdk\flutter
    • Framework revision f4abaa0735 (4 months ago), 2021-07-01 12:46:11 -0700
    • Engine revision 241c87ad80
    • Dart version 2.13.4

[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at C:\Users\bright\AppData\Local\Android\sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: C:\Program Files\Android\Android Studio1\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[X] Chrome - develop for the web (Cannot find Chrome executable at .\Google\Chrome\Application\chrome.exe)
    ! Cannot find Chrome. Try setting CHROME_EXECUTABLE to a Chrome executable.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Program Files\Android\Android Studio1
    • Flutter plugin version 44.0.1
    • Dart plugin version 191.8593
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code (version 1.61.2)
    • VS Code at C:\Users\bright\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.27.0

[√] Connected device (2 available)
    • Infinix X652A (mobile) • 0494625032002068 • android-arm64  • Android 9 (API 28)
    • Edge (web)             • edge             • web-javascript • Microsoft Edge 92.0.902.84

! Doctor found issues in 1 category.

Please how can i solve this. Is there any thing am missing