Fabian

+1 I have installed by bower and got the same problem.

On which ubuntu version is this working?

Fix vor v8: replacement of elements/header_required.php, line 69: ``` $app = \Concrete\Core\Support\Facade\Application::getFacadeApplication(); /** @var \Concrete\Core\User\UserInfoRepository $author */ $author = $app->make(\Concrete\Core\User\UserInfoRepository::class)->getByID($c->getCollectionUserID()); ```