Initial commit，修正

vendor/yiisoft/yii2/rbac/Permission.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * @link https://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license https://www.yiiframework.com/license/
+ */
+
+namespace yii\rbac;
+
+/**
+ * For more details and usage information on Permission, see the [guide article on security authorization](guide:security-authorization).
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @since 2.0
+ */
+class Permission extends Item
+{
+    /**
+     * {@inheritdoc}
+     */
+    public $type = self::TYPE_PERMISSION;
+}