Fatal error: Uncaught TypeError: call_user_func_array(): Argument #1 ($callback) must be a valid callback, class Users does not have a method "index" in /home/digitaltells/htdocs/app/libraries/Core.php:45 Stack trace: #0 /home/digitaltells/htdocs/public/index.php(8): Core->__construct() #1 {main} thrown in /home/digitaltells/htdocs/app/libraries/Core.php on line 45