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(202): 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/shopware.php(20): Shopware\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #8 {main} thrown in /var/www/custom/project/TspoCustomPages/Subscriber/Frontend.php on line 54