How to run it in thinkphp6 , I try but not success

[yemaozi999]

this is my start.php
`
namespace think;

require DIR . '/vendor/autoload.php';
require_once './public/slog.php';
// 定义CMF根目录,可更改此目录
define('CMF_ROOT', DIR . '/');
// 定义应用目录
define('APP_PATH', DIR . '/app/');
define('CONF_PATH', CMF_ROOT . '/config/');
//define('QJ_ADMIN_COMM', APP_PATH . '/admin/common/');
define('WEB_ROOT', DIR . '/');
define('VENDOR_PATH',DIR . '/vendor/');
define('PHINX_PATH', realpath(DIR . '/phinx-migrations-generator/bin/'));

require APP_PATH . '/Const.php';//常量表
class newApp extends App{
public function getConfigPath():string{
if(defined(CONF_PATH)){
return CONF_PATH;
}else{
return $this->rootPath . 'config' . DIRECTORY_SEPARATOR;
}
}
}

// 执行HTTP应用并响应
$http = (new newApp())->http;
$response = $http->run();
$response->send();
$http->end($response);
`