This resolves to the current namespace so it is resolved as `Zikula\Module\AdminModule\Controller\Symfony\Component\HttpFoundation\Response`

It should be either:

    @return \Symfony\Component\HttpFoundation\Response symfony response object

or better

    @return Response symfony response object

and use an import `use` statement at the top of the file. phpStorm will do this for you automatically. I really recommend it as an IDE - we have an OSS license if you'd like one, email me drak at zikula...