LINUX部署官网上workerman-chat的栗子，一直404

linux上部署
找到start_web.php 然后发现这里需要部署自己的域名等，如下部署

<?php 
/**
 * This file is part of workerman.
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author walkor<walkor@workerman.net>
 * @copyright walkor<walkor@workerman.net>
 * @link http://www.workerman.net/
 * @license http://www.opensource.org/licenses/mit-license.php MIT License
 */
use \Workerman\Worker;
use \Workerman\WebServer;
use \GatewayWorker\Gateway;
use \GatewayWorker\BusinessWorker;
use \Workerman\Autoloader;

require_once __DIR__ . '/../../vendor/autoload.php';

// WebServer
$web = new WebServer("http://0.0.0.0:55151");
// WebServer进程数量
$web->count = 2;
// 设置站点根目录
//$web->addRoot('www.your_domain.com', __DIR__.'/Web');
//$web->addRoot('http://www.***.top', '/var/www/html/xiaoguo/workerman/vendor/workerman/workerman');
$web->addRoot('http://www.***.top', '/var/www/html/xiaoguo/workerman/');

// 如果不是在根目录启动，则运行runAll方法
if(!defined('GLOBAL_START'))
{
    Worker::runAll();
}

启动。。。。访问 http://www.***.top:55151/ 然后就是404.。。怎么改都没用。。。求教