Fatal error: Uncaught Error: Class 'mysqli' not found in /var/www/html/mixins/database.php:33 Stack trace: #0 /var/www/html/mixins/database.php(5): Database->getConnection() #1 /var/www/html/gallery/index.php(4): Database->__construct() #2 {main} thrown in /var/www/html/mixins/database.php on line 33