fix

lib/pages/receiving/receiving_info.dart

@@ -40,7 +40,8 @@ class _ReceivingInfoState extends State<ReceivingInfo> {
     initPackage(widget.package!);
   }
 
-  initPackage(Package package) {
+  initPackage(Package? package) {
+    if (package == null) return;
     multiImgController.setImageUrls = package.photoUrls;
     setState(() {
       _package = package;
@@ -150,7 +151,7 @@ class _ReceivingInfoState extends State<ReceivingInfo> {
     PackageModel packageModel =
         Provider.of<PackageModel>(context, listen: false);
     var pkg = await packageModel.getPackage(widget.package!.id!);
-    initPackage(pkg!);
+    initPackage(pkg);
   }
 
   _delete() {