i want to make sugarcrm to work on my syno

only i get a fault
Component Status
Session Save Path Setting The session.save_path setting in your php configuration file (php.ini) is not set or is set to a folder which did not exist. You might need to set the save_path setting in php.ini or verify that the folder sets in save_path exist.

Note: Your php configuration file (php.ini) is located at:
/usr/syno/etc/php.ini

what can i do about this and how