2 errors everyday (on line 51 and on line 87)

-- url of the page with the problem -- : kunst.lumiga.nl
-- HikaShop version -- : 2.3.0 Business
-- Joomla version -- : 3.2.3 Stable
-- PHP version -- : 5.3.27
-- Browser(s) name and version -- : Firefox 28.0
-- Error-message(debug-mod must be tuned on) -- : Error_message

Everyday after installation Hikashop I got these errors and I don't know why.
After refresh the error is gone until the next day when I startup my computer.

Warning: is_readable() [function.is-readable]: open_basedir restriction in effect. File(/dev/urandom) is not within the allowed path(s): (/nfs/home/deb60930/:/tmp:/var/tmp:/usr/local/lib/php/:/usr/home/deb60930/:/nfs/home/deb60930/:/home/deb60930/) in /nfs/home/deb60930/domains/lumiga.nl/public_html/kunst/libraries/phpass/PasswordHash.php on line 51

Warning: Cannot modify header information - headers already sent by (output started at /nfs/home/deb60930/domains/lumiga.nl/public_html/kunst/libraries/phpass/PasswordHash.php:51) in /nfs/home/deb60930/domains/lumiga.nl/public_html/kunst/libraries/joomla/input/cookie.php on line 87

I Hope someone can help me because the site must be live very soon.

With Kind Regards,
Sailfin