Fatal error: Uncaught Error: Class 'CI_Controller' not found in /var/www/html/public_html/system/core/CodeIgniter.php:233 Stack trace: #0 /var/www/html/public_html/system/core/Lang.php(98): get_instance() #1 /var/www/html/public_html/system/database/DB_driver.php(1165): CI_Lang->load('db_lang.php') #2 /var/www/html/public_html/system/database/DB_driver.php(124): CI_DB_driver->display_error('db_unable_to_co...') #3 /var/www/html/public_html/system/database/DB.php(148): CI_DB_driver->initialize() #4 /var/www/html/public_html/b2c/libraries/custom_router.php(13): DB() #5 /var/www/html/public_html/b2c/libraries/custom_router.php(21): Custom_Router->__construct() #6 /var/www/html/public_html/b2c/config/routes.php(42): Custom_Router::cms_routes() #7 /var/www/html/public_html/system/core/Router.php(138): include('/var/www/html/p...') #8 /var/www/html/public_html/system/core/CodeIgniter.php(173): CI_Router->_set_routing() #9 /var/www/html/public_html/index.php(227): require_once('/var/www/html/p...') #10 {main} thrown in /var/www/html/public_html/system/core/CodeIgniter.php on line 233