An uncaught Exception was encountered

Type: Error

Message: Class 'CI_Controller' not found

Filename: /home/turkocaklari/public_html/system/core/CodeIgniter.php

Line Number: 369

Backtrace:

File: /home/turkocaklari/public_html/application/config/routes.php
Line: 54
Function: DB

File: /home/turkocaklari/public_html/index.php
Line: 315
Function: require_once