baseXX/application/admin/controller/system/SystemUpgradeclient.php

<?php
// +----------------------------------------------------------------------
// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
// +----------------------------------------------------------------------
// | Copyright (c) 2016~2020 https://www.crmeb.com All rights reserved.
// +----------------------------------------------------------------------
// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
// +----------------------------------------------------------------------
// | Author: CRMEB Team <admin@crmeb.com>
// +----------------------------------------------------------------------

namespace app\admin\controller\system;

use app\admin\controller\AuthController;
use service\JsonService as Json;
use service\UpgradeService as uService;
use think\Db;
use app\admin\model\system\SystemConfig;

/**
 * 在线升级控制器
 * Class SystemUpgradeclient
 * @package app\admin\controller\system
 *
 */
class SystemUpgradeclient extends AuthController
{

}