final

lib/pages/pay_now.dart

@@ -10,7 +10,7 @@ import '../widgets/mobile/mobile_pay_now.dart';
 class PayNow extends StatelessWidget {
   final int orderId;
 
-  const PayNow(this.orderId, {Key key}) :
+  const PayNow(this.orderId, {Key? key}) :
       super(key: key);
 
 
@@ -20,10 +20,10 @@ class PayNow extends StatelessWidget {
 
     return ResponsiveBuilder(
       builder: (context, sizingInformation) =>
-          ScreenTypeLayout(
-            mobile: MobilePayNow(orderId,),
-            tablet: DesktopPayNow(orderId,),
-            desktop: DesktopPayNow(orderId,),
+          ScreenTypeLayout.builder(
+            mobile: (context) => MobilePayNow(orderId,),
+            tablet: (context) => DesktopPayNow(orderId,),
+            desktop: (context) => DesktopPayNow(orderId,),
           ),
     );
   }