am found the solutions

[ANKIT077-IND]

@Mixpeal issue is that casting issue, can do that in debugPrint convert into toString in sendPayment() method.

if (response.statusCode == 200) {
debugPrint(body.toString());
return {'error': false, 'message': body};
} else {
String? message = body["errors"]?[0]?["description"].toString();
debugPrint(message.toString());
return {'error': true, 'message': message};
}

[androidsarvesh878]

if (response.statusCode == 200) {
// debugPrint(body);
debugPrint(jsonEncode(body));
return {'error': false, 'message': body};
} else {
String message = body["errors"]?[0]?["description"];
debugPrint(message);
return {'error': true, 'message': message};
}

[ANKIT077-IND]

yes

[androidsarvesh878]

// debugPrint(body); //remove this
debugPrint(jsonEncode(body)); // add this