我已经搜索了stackoverflow，确实有很多关于这个错误的问题，但是对于我的生活，我不能看到我做错了什么。

$routes->get('/', '/User_Public/Home::index');
$routes->get('about-us', '/User_Public/Home::aboutUs');
$routes->get('contact-us', '/User_Public/Home::contactUs');

下面是我的目录结构：

这是应用程序/控制器/User_Public/Home的内容〈？php

namespace App\Controllers\User_Public;

use App\Controllers\User_PublicController;
use App\Models\UserModel;

class Home extends User_PublicController
{

public function __construct()
{
    // run the parent's contruct
    parent::__construct();
}

public function index()
{
    //$this->cachePage(DAY);
    // .= will add to exisiting css files.
    $this->data['user_public_css']  .=   '<!-- user_public_css extened -->
                                            <link rel="stylesheet" 
                      href="'.base_url().'/user_public/theme/bs4/css/carousel.css">';
                                            
    $this->data['active_menu']          = '';
    return view('user_public/home/index', $this->data);
}

public function aboutUs()
{
    //$this->cachePage(DAY);
    $this->data['active_menu'] = 'aboutUs';
    return view('user_public/aboutUs/index', $this->data);
}

public function contactUs()
{
    $this->data['active_menu'] = 'contactUs';
    return view('user_public/contactUs/index', $this->data);
}

}

这就是错误;

Fatal error: Cannot declare class 
App\Controllers\User_Public\Home, because 
the name is already in use in/var/www/XXXXXXXdomain/api.example.com/app_dir/app/Controllers/User_Public/Home.php on line 0

感谢您的指点。