应用程序名称显示两次-路由问题或登录功能问题

我有一个小问题，我不确定它是路由问题还是我的登录功能有问题。我有这个ACL插件，我买了并集成到我的应用程序。也就是说，登录功能是内置在插件中，所以我编辑我的路由如下

 Router::connect('/', array('plugin' => 'AuthAcl', 'controller' => 'users', 'action' => 'login', 'home'));

Router::connect('/pages/*', array('controller' => 'pages', 'action' => 'display'));

现在登录将工作，但当我登录它看起来像这样localhost/app/app代替localhost/app.

我看不出路由有什么问题。

我的登录功能如下

public function login() {
    $this->layout = 'admin_login';
    $this->Session->delete('auth_user');
    App::uses('Setting', 'AuthAcl.Model');
    $Setting = new Setting();
    $error = null;
    $general = $Setting->find('first',array('conditions' => array('setting_key' => sha1('general'))));
    if (!empty($general)){
        $general = unserialize($general['Setting']['setting_value']);
    }
    $this->set('general',$general);
    $user = $this->Auth->user();
    if(!empty($user)){
        $this->redirect($this->Auth->redirect());
    }
    if ($this->request->is('post')) {
        if ($this->Auth->login()) {
            if ((int)$this->request->data['User']['remember_me'] == 0){
                $this->Cookie->delete('AutoLoginUser');
            }else{
                $this->Cookie->write('AutoLoginUser', $this->Auth->user(), true, '+2 weeks');
            }
            $this->redirect($this->Auth->redirect());
        } else {
            $error = __('Your username or password was incorrect.');
        }
    }
    $this->set('error',$error);

为什么我登录时没有正确重定向。