如何在响应中修复预标签

Question

我收到一个包含在pre标签内的响应。（如）

  

结果..

注意：

  

获得回复200 ok。但格式不正确

我看到了负责从服务器获取值的函数，并且还通过SQL查询了它们的值。

路径：

  

/ widgets /？action = get-add-modal-content＆dashboard-id = 548＆dashboard-type = user

结果：

{"widgets_categories": ...}

代码：

namespace Tuleap\Dashboard\User;

use Tuleap\Dashboard\DashboardPresenter;

class UserDashboardPresenter extends DashboardPresenter
{
    public $user_id;

    public function __construct(UserDashboard $dashboard, $is_active, array $widgets)
    {
        parent::__construct($dashboard, $is_active, $widgets);

        $this->user_id                = $dashboard->getUserId();
        $this->url_add_widget_content = '/widgets/?'. http_build_query(
            array(
                'action'         => 'get-add-modal-content',
                'dashboard-id'   => $this->id,
                'dashboard-type' => UserDashboardController::DASHBOARD_TYPE
            )
        );
        $this->url_add_widget = '/widgets/?'. http_build_query(
            array(
                'action'         => 'add-widget',
                'dashboard-id'   => $this->id,
                'dashboard-type' => UserDashboardController::DASHBOARD_TYPE
            )
        );
    }
}

我期望使用JSON，但它返回字符串。