Laravel 拉威尔级'；应用程序\类别'；找不到

当我尝试使用categories data调用函数时，

$categories=categories:：all（）返回一个未找到
Class'App\Categories'的错误

这是我的分类控制器代码：

namespace App\Http\Controllers\Admin;
use App\Http\Controllers\Controller as BaseController;
use Carbon\Carbon;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Input;
use App\Categories;


class CategoriesController extends BaseController
{
    public function listcategories() {
    $categories = Categories::all();
    dd($categories);
    return view('admin.list_categories')->with('listcategories', 
    $categories);
}

这是我的分类模型代码

  namespace App; 
  use Illuminate\Http\Request;
  use Illuminate\Database\Eloquent\Model;
  use Illuminate\Support\Facades\DB;
  use Illuminate\Support\Facades\Input;

  class Categories extends Model
  {
    protected $fillable = [
    'title',
    'description',
    'flag_image',
    'status'
 ];

const STATUSES = [
    'Active' => 'Active',
    'Inactive' => 'Inactive',
];

const DEFAULT_STATUS = 'Active';
/**
 * Indicates if the model should be timestamped.
 *
 * @var bool
 */
public $timestamps = false;

public static function rules() {
    return [
        'title' => 'required|string|max:255',
        'status' => 'required|string|in:' . implode(",", Categories::STATUSES)
    ];
}}

有什么问题？我找不到它。
因为模型是通过作曲家自动加载的

在某些情况下，你需要跑步
composer dump autoload
更改后要使其工作
请尝试composer dump autoload添加
yes添加
您对
composer
所说的内容？它应该是
@Sohel0415 yes它在dump-autoload上工作。每次执行此命令时？