Laravel – Why is my test setUp() function failing?

I’ve constructed a test in which I’m using this setUp() function

public function setUp(): void
    {
        parent::setUp();
        Carbon::setTestNow('2001-01-01');
        (new UserFactory())
            ->for(Company::factory()
                ->state(
                    [
                        'name' => 'test company'
                    ]
                )
            )
            ->for(Role::factory()->state([
                'name' => 'admin',
                'id' => 1,
                'hierarchy' => 2
            ]))
            ->createOne();
        $user = User::first();
        $this->actingAs($user);
    }

But I’m getting this error: `Error : Class "Database\Factories\CompanyFactory" not found

C:\laragon\bin\php\php-8.1.10-Win32-vs16-x64\php.exe C:/Users/papal/projects/cloud/vendor/phpunit/phpunit/phpunit --configuration C:\Users\papal\projects\cloud\phpunit.xml --filter "/(Tests\\Feature\\Services\\MassiveUploadServicesTest::testGenerateRecipes)( .*)?$/" --test-suffix MassiveUploadServicesTest.php C:\Users\papal\projects\cloud\tests\Feature\Services --teamcity
Testing started at 10:13 ...
PHPUnit 9.6.10 by Sebastian Bergmann and contributors.


Error : Class "Database\Factories\CompanyFactory" not found
 C:\Users\papal\projects\cloud\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Factories\Factory.php:821
 C:\Users\papal\projects\cloud\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Factories\HasFactory.php:16
 C:\Users\papal\projects\cloud\tests\Feature\Services\MassiveUploadServicesTest.php:37

you may think that CompanyFactory.php does not exists but is does, in ...\database\factories\CompanyFactory.php

<?php

namespace Database\Factories;

use Illuminate\Database\Eloquent\Factories\Factory;

/**
 * @extends \Illuminate\Database\Eloquent\Factories\Factory<\App\Models\Company>
 */
class CompanyFactory extends Factory
{
    /**
     * Define the model's default state.
     *
     * @return array<string, mixed>
     */
    public function definition()
    {
        return [
            'name' => $this->faker->word
        ];
    }
}

What am I missing? This began happening from night to day without any changes in the test. I did a rollback but it’s not working.

>Solution :

If you’ve recently added or moved the CompanyFactory class or made changes to your project’s directory structure, run the following command to regenerate the Composer autoloader:

composer dump-autoload