Fatal error: Uncaught TypeError: usort(): Argument #1 ($array) must be of type array, null given in /var/www/Ez24/functions/Utils/Standard.php:357 Stack trace: #0 /var/www/Ez24/functions/Utils/Standard.php(357): usort() #1 /var/www/Ez24/Template/kontroller/Checkout/Checkout.php(51): sortBasketItems() #2 /var/www/Ez24/Template/router.php(93): include_once('...') #3 /var/www/Ez24/Template/router.php(10): route() #4 /var/www/Ez24/Template/routes.php(72): get() #5 /var/www/Ez24/sites/whamwam.dk/localroutes.php(9): require_once('...') #6 {main} thrown in /var/www/Ez24/functions/Utils/Standard.php on line 357