complete category issue

lib/src/logic/provider/addTocart_provider.dart

@@ -188,7 +188,7 @@ class AddtocartProvider extends ChangeNotifier {
           notifyListeners();
         },
         (response) {
-          print("kdjgkjfghjkfghjkl   $response");
+          print("kdjgkjfghjkfghjkl   ${response.data}");
           couponDataModel = response!;
           iscouponLoading = false;
           notifyListeners();
@@ -222,7 +222,7 @@ class AddtocartProvider extends ChangeNotifier {
           context.showLoader(show: false);
           isCouponApply = false;
           Fluttertoast.showToast(
-            msg: "Coupon Code invalid!",
+            msg: "${error.message}",
             toastLength: Toast.LENGTH_SHORT,
             gravity: ToastGravity.BOTTOM,
             backgroundColor: Colors.red,
@@ -267,6 +267,7 @@ class AddtocartProvider extends ChangeNotifier {
   }
 
 ///////////////////////////////////orderPaymnet///////////////////////////
+  
   bool ispaymentLoader = false;
   Future<void> orderPaymnet(
     BuildContext context,
@@ -285,9 +286,10 @@ class AddtocartProvider extends ChangeNotifier {
         "addressId": addressId,
         "cartId": cartId,
       };
-    } else {
+    } else 
+    {
       data = {
-        "amount": originalAmount,
+        "amount": originalAmount, 
         "addressId": addressId,
         "cartId": cartId,
         "couponId": couponId