Fatal error: Uncaught TypeError: Argument 1 passed to Shop::fetchShop() must be of the type int, null given, called in /home/oita-karaage/www/wp/event_form/horsdoeuvre/form.php on line 21 and defined in /home/oita-karaage/www/wp/event_form/classes/Shop.php:5 Stack trace: #0 /home/oita-karaage/www/wp/event_form/horsdoeuvre/form.php(21): Shop->fetchShop(NULL) #1 {main} thrown in /home/oita-karaage/www/wp/event_form/classes/Shop.php on line 5