add default

backendApi/modules/v1/models/AdminRole.php

@@ -143,7 +143,7 @@ class AdminRole extends \common\components\ActiveRecord
                 'type' => function($data){
                     $value = $data['value'];
                     $result = Admin::findOneAsArray('ID=:ID', [':ID'=>$value], 'ADMIN_NAME');
-                    return $result['ADMIN_NAME'];
+                    return $result['ADMIN_NAME']??'';
                 },
             ],
             'CREATED_AT' => [