Hi
I have just done installation on Ubuntu Plesk, i have encountered this error "Failed to include_once(“G:\PleskVhosts\teknosyssolutions.com\hrms.teknosyssolutions.com/core/db/mysql.class.php”) and solved through permissions;
The owner of Dolbarr folder has given to wwwadmin , you need to add the group of the www-data (web users).
sudo chown -R wwwadmin:www-data /var/www/vhosts/[domain]/httpdocs/[dolibar direcory]/
