Facing a Forbidden issue

This is the setting in my config.php file

$config['csrf_protection'] = TRUE;
$config['csrf_token_name'] = 'csrf_test_name';
$config['csrf_cookie_name'] = 'csrf_cookie_name';
$config['csrf_expire'] = 7200;
$config['csrf_regenerate'] = TRUE;
$config['csrf_exclude_uris'] = array();


this code is working fine on someone else's server but giving problem at my end when i am trying to setup locally.