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一個Facebook頁面作爲管理上張貼我不能發佈一個Facebook頁面上的admin.It給了我這個錯誤不能使用圖形API PHP笨

Exception occured, code: 200 with message: (#200) The user hasn't authorized the application to perform this action 

雖然我的頁面的管理這裏是我permissions.I覺得我有必要的權限,但仍然是我的代碼不能正常工作

["permissions"]=> 
    object(stdClass)#41 (1) { 
     ["data"]=> 
     array(5) { 
     [0]=> 
     object(stdClass)#42 (2) { 
      ["permission"]=> 
      string(12) "user_friends" 
      ["status"]=> 
      string(7) "granted" 
     } 
     [1]=> 
     object(stdClass)#43 (2) { 
      ["permission"]=> 
      string(5) "email" 
      ["status"]=> 
      string(7) "granted" 
     } 
     [2]=> 
     object(stdClass)#44 (2) { 
      ["permission"]=> 
      string(12) "manage_pages" 
      ["status"]=> 
      string(7) "granted" 
     } 
     [3]=> 
     object(stdClass)#45 (2) { 
      ["permission"]=> 
      string(15) "publish_actions" 
      ["status"]=> 
      string(7) "granted" 
     } 
     [4]=> 
     object(stdClass)#46 (2) { 
      ["permission"]=> 
      string(14) "public_profile" 
      ["status"]=> 
      string(7) "granted" 
     } 
     } 

這裏是我的代碼

if (isset($session)) { 
      $_SESSION['fb_token'] = $session->getToken(); 
      $session = new FacebookSession($session->getToken()); 


      $request = new FacebookRequest($session, 'GET', '/me?fields=accounts{access_token,category,name,id,perms},permissions'); 
      $response = $request->execute(); 

      $graphObject = $response->getGraphObject()->asArray(); 
      $fb_data = array(
       'me' => $graphObject, 
       'loginUrl' => $helper->getLoginUrl($facebook_default_scope), 
      ); 
      $this->ci->session->set_userdata('fb_data', $fb_data); 
      /*Facebook Post*/ 
       try { 
        $response = (new FacebookRequest(
        1420447421611683 is $page_id 
        $session, 'POST', '/1420447421611683/feed', array(
         'access_token' => $fb_data['me']['accounts']->data[0]->access_token, 
         'link' => 'www.example.com', 
         'message' => 'Whats Up', 
        ) 
       ))->execute()->getGraphObject(); 
        echo "Posted with id: " . $response->getProperty('id'); 
       } catch(FacebookRequestException $e) { 
         echo "Exception occured, code: " . $e->getCode(); 
         echo " with message: " . $e->getMessage(); 
       } 
      /*End*/ 
} 

在此先感謝

回答