Fatal error: Uncaught TypeError: BasketDatabase::__construct(): Argument #2 ($placementType) must be of type string, null given, called in /var/www/html/basket.php on line 76 and defined in /var/www/html/basket/BasketDatabase.php:17 Stack trace: #0 /var/www/html/basket.php(76): BasketDatabase->__construct(0, NULL, Object(mysqli)) #1 {main} thrown in /var/www/html/basket/BasketDatabase.php on line 17