Fatal error: Uncaught Error: Call to a member function rollBack() on null in /var/www/pos.santappp.id/sys/db.php:30 Stack trace: #0 /var/www/pos.santappp.id/sys/query.php(87): Databese->__construct() #1 /var/www/pos.santappp.id/sys/handler.php(15): Config->__construct() #2 /var/www/pos.santappp.id/index.php(7): include('/var/www/pos.sa...') #3 {main} thrown in /var/www/pos.santappp.id/sys/db.php on line 30