Fatal error: Uncaught TypeError: TspoCustomPages\Subscriber\Frontend::_getShopSpecificTemplatePath(): Argument #1 ($placeholderTplPath) must be of type string, null given, called in /var/www/custom/project/TspoCustomPages/Subscriber/Frontend.php on line 44 and defined in /var/www/custom/project/TspoCustomPages/Subscriber/Frontend.php:54 Stack trace: #0 /var/www/custom/project/TspoCustomPages/Subscriber/Frontend.php(44): TspoCustomPages\Subscriber\Frontend->_getShopSpecificTemplatePath(NULL) #1 /var/www/vendor/shopware/shopware/engine/Library/Enlight/Event/Handler/Default.php(90): TspoCustomPages\Subscriber\Frontend->extendCustomTemplate(Object(Enlight_Controller_ActionEventArgs)) #2 /var/www/vendor/shopware/shopware/engine/Library/Enlight/Event/EventManager.php(207): Enlight_Event_Handler_Default->execute(Object(Enlight_Controller_ActionEventArgs)) #3 /var/www/vendor/shopware/shopware/engine/Library/Enlight/Controller/Action.php(203): Enlight_Event_EventManager->notify('Enlight_Control...', Object(Enlight_Controller_ActionEventArgs)) #4 /var/www/vendor/shopware/shopware/engine/Library/Enlight/Controller/Dispatcher/Default.php(467): Enlight_Controller_Action->dispatch('indexAction') #5 /var/www/vendor/shopware/shopware/engine/Library/Enlight/Controller/Front.php(226): Enlight_Controller_Dispatcher_Default->dispatch(Object(Enlight_Controller_Request_RequestHttp), Object(Enlight_Controller_Response_ResponseHttp)) #6 /var/www/vendor/shopware/shopware/engine/Shopware/Kernel.php(195): Enlight_Controller_Front->dispatch() #7 /var/www/vendor/symfony/http-kernel/HttpCache/SubRequestHandler.php(85): Shopware\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #8 /var/www/vendor/symfony/http-kernel/HttpCache/HttpCache.php(479): Symfony\Component\HttpKernel\HttpCache\SubRequestHandler::handle(Object(AppKernel), Object(Symfony\Component\HttpFoundation\Request), 1, true) #9 /var/www/vendor/shopware/shopware/engine/Shopware/Components/HttpCache/AppCache.php(270): Symfony\Component\HttpKernel\HttpCache\HttpCache->forward(Object(Symfony\Component\HttpFoundation\Request), true, NULL) #10 /var/www/vendor/symfony/http-kernel/HttpCache/HttpCache.php(452): Shopware\Components\HttpCache\AppCache->forward(Object(Symfony\Component\HttpFoundation\Request), true) #11 /var/www/vendor/symfony/http-kernel/HttpCache/HttpCache.php(346): Symfony\Component\HttpKernel\HttpCache\HttpCache->fetch(Object(Symfony\Component\HttpFoundation\Request), true) #12 /var/www/vendor/shopware/shopware/engine/Shopware/Components/HttpCache/AppCache.php(196): Symfony\Component\HttpKernel\HttpCache\HttpCache->lookup(Object(Symfony\Component\HttpFoundation\Request), true) #13 /var/www/vendor/symfony/http-kernel/HttpCache/HttpCache.php(224): Shopware\Components\HttpCache\AppCache->lookup(Object(Symfony\Component\HttpFoundation\Request), true) #14 /var/www/vendor/shopware/shopware/engine/Shopware/Components/HttpCache/AppCache.php(117): Symfony\Component\HttpKernel\HttpCache\HttpCache->handle(Object(Symfony\Component\HttpFoundation\Request), 1, true) #15 /var/www/shopware.php(20): Shopware\Components\HttpCache\AppCache->handle(Object(Symfony\Component\HttpFoundation\Request)) #16 {main} thrown in /var/www/custom/project/TspoCustomPages/Subscriber/Frontend.php on line 54