求助，在Laravel 8的单元测试中，使用 数据工厂创建模型，faker不可用

PHP版本：7.39
Laravel版本：8

单元测试代码：

<?php

namespace Tests\Unit;

use App\Models\Item;
use PHPUnit\Framework\TestCase;
use App\Models\ItemScene;

class ItemTest extends TestCase
{
    /** @test */
    public function a_item_has_many_item_scenes()
    {
        $item = Item::factory()->create();

        ItemScene::factory()->create(['item_id' => $item->id]);

        $this->assertInstanceOf('Illuminate\Database\Eloquent\Relations\HasMany', $item->itemScenes());
    }
}

工厂代码：

<?php

namespace Database\Factories;

use App\Models\Item;
use Illuminate\Database\Eloquent\Factories\Factory;

class ItemFactory extends Factory
{

    /**
     * The name of the factory's corresponding model.
     *
     * @var string
     */
    protected $model = Item::class;

    /**
     * Define the model's default state.
     *
     * @return array
     */
    public function definition()
    {
        return [
            'area_name'         => '深圳市',
            'dept_name'         => $this->faker->name,
            'item_name'         => $this->faker->name,
            'item_code'         => $this->faker->randomNumber(),
            'manage_type'       => $this->faker->randomElement(['A', 'B', 'C', 'D']),
            'implement_code'    => $this->faker->md5,
            'remark'            => $this->faker->sentence,
        ];
    }
}

错误信息

PHPUnit 9.5.0 by Sebastian Bergmann and contributors.

E                                                                   1 / 1 (100%)

Time: 00:00.139, Memory: 10.00 MB

There was 1 error:

1) Tests\Unit\ItemTest::a_item_has_many_item_scenes
InvalidArgumentException: Unknown formatter "name"

/home/vagrant/code/item_field_trace_back/vendor/fakerphp/faker/src/Faker/Generator.php:248
/home/vagrant/code/item_field_trace_back/vendor/fakerphp/faker/src/Faker/Generator.php:228
/home/vagrant/code/item_field_trace_back/vendor/fakerphp/faker/src/Faker/Generator.php:285
/home/vagrant/code/item_field_trace_back/database/factories/ItemFactory.php:27
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:382
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:361
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:345
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Concerns/GuardsAttributes.php:157
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:350
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:318
/home/vagrant/code/item_field_trace_back/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Factories/Factory.php:230
/home/vagrant/code/item_field_trace_back/tests/Unit/ItemTest.php:14

ERRORS!
Tests: 1, Assertions: 0, Errors: 1.

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