Fatal error: Uncaught Error: Call to a member function getAttribute() on null in /var/www/web1/htdocs/shop/custom/plugins/CreateCtrlSeminars/Subscribers/SeminarsSubscriber.php:91 Stack trace: #0 /var/www/web1/htdocs/shop/engine/Library/Enlight/Event/Handler/Default.php(90): CreateCtrlSeminars\Subscribers\SeminarsSubscriber->onAfterIndexActionFrontendDetail() #1 /var/www/web1/htdocs/shop/engine/Library/Enlight/Event/EventManager.php(291): Enlight_Event_Handler_Default->execute() #2 /var/www/web1/htdocs/shop/engine/Library/Enlight/Hook/HookExecutionContext.php(108): Enlight_Event_EventManager->filter() #3 /var/www/web1/htdocs/shop/engine/Library/Enlight/Hook/HookManager.php(172): Enlight_Hook_HookExecutionContext->execute() #4 /var/www/web1/htdocs/shop/var/cache/production_202306271137/proxies/ShopwareControllersFrontendDetailProxy.php(101): Enlight_Hook_HookManager->executeHooks() #5 /var/www/web1/htdocs/shop/engine/Library/Enlight/Controller/Action.php(188): Shopware_Proxies_ShopwareControllersFrontendDetailProxy->indexAc in /var/www/web1/htdocs/shop/custom/plugins/CreateCtrlSeminars/Subscribers/SeminarsSubscriber.php on line 91