Laravel 8，未找到模型工厂类

因此，当使用laravel 8.x中引入的新模型工厂类时，这个奇怪的问题说laravel找不到与模型相对应的工厂。我得到这个错误

PHP Error:  Class 'Database/Factories/BusinessUserFactory' not found in .....

我跟着啦的医生，我不知道发生了什么

这是类BusinessUser

<?php

namespace App;

use Database\Factories\BusinessUserFactory;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class BusinessUser extends Model
{
    use HasFactory;
}

和工厂

<?php

namespace Database\Factories;

use App\BusinessUser;
use Illuminate\Database\Eloquent\Factories\Factory;
use Illuminate\Support\Str;

class BusinessUserFactory extends Factory
{
    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = BusinessUser::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'name' => "dsfsf"
        ];
    }
}

任何想法或线索都非常感谢。