( ! ) Fatal error: Class 'CI_Controller' not found in /var/www/html/system/core/CodeIgniter.php on line 233
Call Stack
#	Time	Memory	Function	Location
1	0.0000	230880	{main}( )	.../index.php:0
2	0.0001	232992	require_once( '/var/www/html/system/core/CodeIgniter.php' )	.../index.php:201
3	0.0007	310008	CI_Router->_set_routing( )	.../CodeIgniter.php:173
4	0.0007	310744	include( '/var/www/html/application/config/routes.php' )	.../Router.php:138
5	0.0007	312448	DB( )	.../routes.php:51
6	0.0009	513008	CI_DB_driver->initialize( )	.../DB.php:148
7	0.0011	520840	CI_DB_driver->display_error( )	.../DB_driver.php:124
8	0.0011	524624	CI_Lang->load( )	.../DB_driver.php:1165
9	0.0011	524928	get_instance( )	.../Lang.php:98