Fatal error: Uncaught TypeError: array_diff(): Argument #1 ($array) must be of type array, false given in D:\inetpub\wwwroot\PHPRunner\OnlineShop\classes\listpage_simple.php:262 Stack trace: #0 D:\inetpub\wwwroot\PHPRunner\OnlineShop\classes\listpage_simple.php(262): array_diff(false, Array) #1 D:\inetpub\wwwroot\PHPRunner\OnlineShop\classes\listpage.php(2319): ListPage_Simple->buildSearchPanel() #2 D:\inetpub\wwwroot\PHPRunner\OnlineShop\rabatt_product_list.php(154): ListPage->prepareForBuildPage() #3 {main} thrown in D:\inetpub\wwwroot\PHPRunner\OnlineShop\classes\listpage_simple.php on line 262