diff --git a/app/Http/Controllers/Admin/ParkingSpaceCatMapController.php b/app/Http/Controllers/Admin/ParkingSpaceCatMapController.php
index af8a57c..3e6aeab 100644
--- a/app/Http/Controllers/Admin/ParkingSpaceCatMapController.php
+++ b/app/Http/Controllers/Admin/ParkingSpaceCatMapController.php
@@ -183,7 +183,7 @@ class ParkingSpaceCatMapController extends BaseController
                     $ParkingAttr['import_diagram'] ?? ''
                 );
                 $item['attr_name'] = $ParkingAttr['attributes'] ?? '';
-                $item['is_default'] = $ParkingAttr['is_default'];
+                $item['is_default'] = $ParkingAttr['is_default'] ?? 0;
 
                 $ParkingType = ParkingSpaceType::query()->find($space_type_id)
                     ?? [