Slight.error [0]: Undefined constant "Controller\confpage"

Class:

Error

Error at [ line:91]: /app/Controller/ErrorController.php

	Included files [21]:
1.	/app/public/index.php
2.	/lib/Slight/bootstrap.php
3.	/lib/Slight/Kernel/App.php
4.	/lib/Slight/Kernel/ExceptionHandler.php
5.	/lib/Slight/Http/Router.php
6.	/app/Conf/routes.php
7.	/app/Controller/ErrorController.php
8.	/app/Controller/TemplateController.php
9.	/lib/Slight/Container/Controller.php
10.	/app/Model/CommonModel.php
11.	/lib/Slight/Model/Model.php
12.	/app/Conf/db.php
13.	/lib/Slight/Model/DBMySQLi.php
14.	/app/Model/UserModel.php
15.	/lib/Slight/View/View.php
16.	/app/Conf/confsite.php
17.	/app/Conf/confpage.php
18.	/app/View1/menu/menu1.php
19.	/app/View1/menu/menu2.php
20.	/app/View1/header/header1.php
21.	/app/View1/footer/footer1.php