fix default role name

models/AuthItem.php

@@ -98,7 +98,7 @@ class AuthItem extends \yii\db\ActiveRecord {
         $ls = self::find()->andWhere(['type' => 1])->all();
         $re = [];
         foreach ($ls as $key => $value) {
-            $re[$value->name] = Yii::t("app", $value->description);
+            $re[$value->name] = $value->description ? $value->description : $value->name;
         }
         return $re;
     }