completed group batch feature

lib/screens/confirm/confirm_controller.dart

@@ -4,6 +4,7 @@ import 'package:freezed_annotation/freezed_annotation.dart';
 import 'package:provider/provider.dart';
 import 'package:qpay/models/api_response.dart';
 import 'package:qpay/screens/transaction_controller.dart';
+import 'package:qpay/widgets/app_snack_bar.dart';
 
 import '../../http/http.dart';
 
@@ -43,13 +44,7 @@ class ConfirmController extends ChangeNotifier {
 
   void _showErrorSnackBar(String? message) {
     WidgetsBinding.instance.addPostFrameCallback((_) {
-      ScaffoldMessenger.of(context).showSnackBar(
-        SnackBar(
-          content: Text(message.toString()),
-          behavior: SnackBarBehavior.floating,
-          backgroundColor: Colors.deepOrange,
-        ),
-      );
+      AppSnackBar.showError(context, message.toString());
     });
   }