Im update a migration and here was an error

Class App\Http\Controllers\HomeController does not exist

HomeController

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Post;
class HomeController extends Controller
{
   public function index()
   {
     $posts = Post::paginate(10);
     return view ('pages.index', ['posts' => $posts]);
   }
public function show($slug)
{
 $post = Post::where('slug', $slug)->firstOrFail();

 return view ('pages.show', compact('post')); 
}

}

web.php

Route::get('/', 'HomeController@index');
Route::get('/post/{slug}', 'HomeController@show')->name('post.show');
Route::group(['prefix'=>'admin','namespace'=>'Admin'], function(){
    Route::get('/', 'DashboardController@index');
    Route::resource('/categories', 'CategoriesController');
    Route::resource('/tags', 'TagsController');
    Route::resource('/users', 'UsersController');
    Route::resource('/posts', 'PostsController');
});

At the beginning a new authorization controller appeared, I turned off the KG and removed

via Chebli Mohamed