From bdcd995f009dbbaf72f7e109b35bf4ec12c5ef67 Mon Sep 17 00:00:00 2001
From: Qiang Xue <qiang.xue@gmail.com>
Date: Fri, 10 Jan 2014 23:05:25 -0500
Subject: [PATCH] added missing use statement.

---
 framework/web/Session.php | 1 +
 1 file changed, 1 insertion(+)

diff --git a/framework/web/Session.php b/framework/web/Session.php
index fc715dbf4b..664596da89 100644
--- a/framework/web/Session.php
+++ b/framework/web/Session.php
@@ -9,6 +9,7 @@ namespace yii\web;
 
 use Yii;
 use yii\base\Component;
+use yii\base\InvalidConfigException;
 use yii\base\InvalidParamException;
 
 /**