Symfony http_basic身份驗證不斷要求輸入憑據

我試過使用http_basic身份驗證來測試Symfony的安全軟件包。但是，當我嘗試使用管理員/管理員憑據登錄並提交時，它會一直詢問它們。Symfony http_basic身份驗證不斷要求輸入憑據

這是security.yml文件

security: 
    encoders: 
     Symfony\Component\Security\Core\User\User: plaintext 
    providers: 
     in_memory: 
      memory: 
       users: 
        admin: 
         password: admin 
         roles: 'ROLE_ADMIN' 

    firewalls: 
     dev: 
      pattern: ^/(_(profiler|wdt)|css|images|js)/ 
      security: false 

     main: 
      anonymous: ~ 
      http_basic: ~ 

    access_control: 
     - { path: ^/admin, roles: ROLE_ADMIN }]

這是主控制器

<?php 
namespace AppBundle\Controller; 
use Sensio\Bundle\FrameworkExtraBundle\Configuration\Route; 
use Symfony\Component\Form\FormError; 
use Symfony\Component\HttpFoundation\Request; 
use Symfony\Component\HttpFoundation\Response; 
use Symfony\Component\HttpFoundation\JsonResponse; 
use Symfony\Bundle\FrameworkBundle\Controller\Controller; 


class MainController extends Controller { 
    /** 
    * @Route("/", name="homepage") 
    */ 
    public function indexAction() { 
     return new Response('<html><body>Home page1!</body></html>'); 

    } 

    /** 
    * @Route("/admin", name="admin_homepage") 
    */ 
    public function adminIndexAction() { 
     return new Response('<html><body>Admin page1!</body></html>'); 
    } 

} 

?>

服務器是住在這裏：http://sym.soferonline.ro/admin

還有什麼問題呢？謝謝！

來源

2016-02-29 Andrei-Vasile Ciceu