Error: Component page won't load properly with T3 framework

Hello,

Iam having the following error with a restaurant related component:

Fatal error: Call to undefined method VrestaurantViewAddrestaurant::getForm() in /opt/lampp/htdocs/jadirectory/plugins/system/t3/base-bs3/html/layouts/joomla/edit/metadata.php on line 12

The form wont appear with the T3 template and its opened in another window. In the attachment you can see the problem

Can anyone help please? I dont know what to do, I tried everything.