Fatal error: Uncaught TypeError: Argument 1 passed to JTL\Helpers\Product::showAvailabilityForm() must be an instance of JTL\Catalog\Product\Artikel, null given, called in /var/www/vhosts/usfood.de/httpdocs/usfood.de/filter.php on line 125 and defined in /var/www/vhosts/usfood.de/httpdocs/usfood.de/includes/src/Helpers/Product.php:857 Stack trace: #0 /var/www/vhosts/usfood.de/httpdocs/usfood.de/filter.php(125): JTL\Helpers\Product::showAvailabilityForm() #1 [internal function]: {closure}() #2 /var/www/vhosts/usfood.de/httpdocs/usfood.de/includes/vendor/illuminate/collections/Collection.php(640): array_map() #3 /var/www/vhosts/usfood.de/httpdocs/usfood.de/includes/vendor/illuminate/collections/Collection.php(1302): Illuminate\Support\Collection->map() #4 /var/www/vhosts/usfood.de/httpdocs/usfood.de/filter.php(129): Illuminate\Support\Collection->transform() #5 /var/www/vhosts/usfood.de/httpdocs/usfood.de/index.php(13): require('/var/www/vhosts...') #6 {main} thrown in /var/www/vhosts/usfood.de/httpdocs/usfood.de/includes/src/Helpers/Product.php on line 857