ERROR MESSAGE

I have this message on my website : http://www.socialgamework.com/

Warning: is_writable(): open_basedir restriction in effect. File(/) is not within the allowed path(s): (/htdocs:/var/www/socialgamework.com/htdocs:/var/www/socialgamework.com/tmp:/var/www/socialgamework.com/exec_dir:/var/www/socialgamework.com/php-session:/var/lib/lws/:/usr/base/var/lib/lws:/htdocs:/tmp:/exec_dir:/php-session:/usr/share/php:/etc/pki/tls/certs:/etc/ssl/certs) in /htdocs/wordpress/wp-admin/includes/misc.php on line 211