Website/app/config/services_dev.php

<?php

declare(strict_types=1);

use Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator;

return static function (ContainerConfigurator $containerConfigurator): void {
    $services = $containerConfigurator->services()
        ->defaults()
        ->autowire()
        ->autoconfigure()
    ;

    $services->load('DoctrineFixtures\\', '../fixtures');
};