[Solved] File(/var/lib/php/session) is not within the allowed path(s):

[craziks]

 Severity: Warning --> is_dir(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s)

Severity: Warning --> mkdir(): open_basedir restriction in effect. File(/var/lib/php/session) is not within the allowed path(s)

My Config.php:
$config['sess_driver'] = 'files';
$config['sess_cookie_name'] = 'ci_session';
$config['sess_expiration'] = 7200;
$config['sess_save_path'] = NULL;
$config['sess_match_ip'] = FALSE;
$config['sess_time_to_update'] = 300;
$config['sess_regenerate_destroy'] = FALSE;

 

[craziks]

Solved , after adding  

$config['sess_save_path'] = '/tmp' ;