Warning: system(): Unable to fork [sudo -u simple_user /home/simple_user/scripts/update_site.sh augmented3d.happyuser.info 2>&1] in /var/www/vps2.happyuser.info/update-augmented3d-site.php on line 13
generate css:
Warning: system(): Unable to fork [cd /var/www/augmented3d.happyuser.info/app/assets] in /var/www/vps2.happyuser.info/update-augmented3d-site.php on line 18

Warning: system(): Unable to fork [sass --update /var/www/augmented3d.happyuser.info/app/assets:/var/www/augmented3d.happyuser.info/public/css 2>&1] in /var/www/vps2.happyuser.info/update-augmented3d-site.php on line 19
done.