update shipment and carton

lib/pages/shipment/widgets.dart

@@ -3,21 +3,21 @@ import 'package:fcs/helpers/theme.dart';
 import 'package:fcs/pages/widgets/local_text.dart';
 import 'package:flutter/material.dart';
 
-Widget getShipmentNumberStatus(BuildContext context, Shipment shipment) {
+Widget getShipmentNumberStatus(BuildContext context, Shipment? shipment) {
   return Row(
     mainAxisAlignment: MainAxisAlignment.center,
     children: [
       LocalText(
         context,
         '',
-        text: shipment.shipmentNumber ?? "",
+        text: shipment?.shipmentNumber ?? "",
         color: primaryColor,
         fontSize: 18,
         fontWeight: FontWeight.bold,
       ),
       Padding(
         padding: const EdgeInsets.only(left: 8.0),
-        child: Chip(label: Text(shipment.status ?? "")),
+        child: Chip(label: Text(shipment?.status ?? "")),
       ),
     ],
   );