Redirect – Call to a member function getPresenterFactory()

Ahoj, mam problem s redirect. Mnou vytvorena funkce

      public function facebookLogout() {
           $this->facebook->destroySession();
           $this->redirect('Homepage:');
    }

hlasi chybu „Call to a member function getPresenterFactory() on a non-object“, vadito, protoze to je primo v HomepagePresenter.php?

Dekuji za odpovedi.