Error session PHP /var/lib/sessionsphp don't exist

Hi,

We have a error in administration Woocommerce

We have a solution for change a acccess /var/lib/sessionsphp by /home/username/sessionsphp where do you change a direction Folder ?

Thanks

Sessions de PHP
=============================================================================================
Chemin de sauvegarde de session:
Warning:  is_dir() [function.is-dir]: open_basedir restriction in effect. File(/var/lib/sessionsphp) is not within the allowed path(s): (/home/ordisolu:/usr/lib/php:/usr/php4/lib/php:/usr/local/lib/php:/usr/local/php4/lib/php:/tmp) in /home/ordisolu/public_html/cara/wp-content/plugins/woocommerce/admin/woocommerce-admin-status.php on line 331
/var/lib/sessionsphp n’existe pas - Contactez votre hébergeur pour résoudre le problème.
Session name: 	PHPSESSID

http://wordpress.org/extend/plugins/woocommerce/