update

@@ -31,6 +31,9 @@ class Category extends Base
      */
     public static function getChildIdsArr($id)
     {
+        if(!$id){
+            return [];
+        }
         $list = self::where('status', self::STATUS_ACTIVE)->select(['id','pid'])->get()->toArray();
         $ids = [];
         Arr::findChildIds($list, $id, $ids);