Fatal error: Uncaught PDOException: could not find driver in /var/www/illumine/vendor/sabre/dav/examples/groupwareserver.php:35 Stack trace: #0 /var/www/illumine/vendor/sabre/dav/examples/groupwareserver.php(35): PDO->__construct() #1 {main} thrown in /var/www/illumine/vendor/sabre/dav/examples/groupwareserver.php on line 35