菜鸟求救~~Laravel5.4 新增控制器失败，为什么呢？

web.php

Route::get('/about','MyController@getAbout');

然后在新增在controllers/Auth里新增一个MyController.php

<?php

namespace App\Http\Controllers\Auth;

use App\Http\Controllers\Controller;
use Illuminate\Foundation\Auth\SendsPasswordResetEmails;

class MyController extends Controller
{
    public function getAbout(){
        return 'about';
    }
}

打开localhost/about失败
返回如下错误

ReflectionException in Container.php line 721:
Class App\Http\Controllers\MyController does not exist

求解~~谢谢