So, go to /etc/zpanel/configs/apache/

Edit httpd-vhosts.conf and check OpenBasedir directives in first <VirtualHost *:80> entry (first one should be panel’s vhost). If it’s not for some wierd reason, find it and remove line that looks like:

php_admin_value open_basedir «/var/zpanel/hostdata/USER/public_html/DOMAIN:/var/zpanel/temp/ etc.»

# service apache2 reload