ok i only need it for one domain and its mine so can you help me please ?
Login as admin, select the domain you want to remove the restriction from in the panel, and then click on Edit Apache Template.
Scroll down to the bottom of the apache template text and find the <VirtualHost *> entry that has the server alias with
www.yourdomain.com.
Remove the following lines from this VirtualHost entry (should be similar to what is shown below):
php_admin_value open_basedir "{homedir}:{otherpaths}"
php_admin_value upload_tmp_dir {homedir}/{otherpaths}
php_admin_value session.save_path 0;660;{homedir}/{otherpaths}
Save the template. The restriction should no longer apply to this domain after the EHCP daemon runs the domain sync. If that doesn't happen within a minute, restart the ehcp daemon by running this command:
sudo service ehcp restart