bug at redirect at CI4

problem when use redirect at filter:

PHP Code:

public function before(RequestInterface $request)
    {
        helper('url');
        $session = Services::session();
        $isLoggedIn=session()->get('isLoggedIn');
        if(isset($isLoggedIn)){
        route_to('/home');
    }
        else {
return redirect()->to(site_url('Users/index'));

}