Fix export issue

lib/providers/items.dart

@@ -379,8 +379,14 @@ class ItemProvider extends ChangeNotifier {
 	  final taskId = await FlutterDownloader.enqueue(
       url: Url.exportItems,
       savedDir: baseStorage!.path,
+      headers: {
+        'Authorization': User.token,
+        "Accept": "*"
+      },
       showNotification: true,
       openFileFromNotification: true,
+      saveInPublicStorage: true,
+      fileName: "Items " + DateTime.now().toString() + ".xlsx",
     );
     print(taskId);
     return true;