Fatal error: Uncaught TypeError: Argument 1 passed to Shopware\Components\Compatibility\LegacyStructConverter::convertProductStruct() must be an instance of Shopware\Bundle\StoreFrontBundle\Struct\Product, null given, called in /usr/www/users/spiritin/relaunch.spirituosen-wolf.de/spirituosen-wolf.de/custom/plugins/KilbGreetingCards/Services/ArticleService.php on line 125 and defined in /usr/www/users/spiritin/relaunch.spirituosen-wolf.de/spirituosen-wolf.de/engine/Shopware/Components/Compatibility/LegacyStructConverter.php:426 Stack trace: #0 /usr/www/users/spiritin/relaunch.spirituosen-wolf.de/spirituosen-wolf.de/custom/plugins/KilbGreetingCards/Services/ArticleService.php(125): Shopware\Components\Compatibility\LegacyStructConverter->convertProductStruct(NULL) #1 /usr/www/users/spiritin/relaunch.spirituosen-wolf.de/spirituosen-wolf.de/custom/plugins/KilbGreetingCards/Controllers/Frontend/KilbGreetingCards.php(75): KilbGreetingCards\Services\ArticleService->getGreetingCardByNumber('GK_Danke_1003') #2 /usr/www/users/spiri in /usr/www/users/spiritin/relaunch.spirituosen-wolf.de/spirituosen-wolf.de/engine/Shopware/Components/Compatibility/LegacyStructConverter.php on line 426