Erreurs dans Fixtures - Symfony 4.4 API REST

Knuckles
PHP Symfony

Bonjour,

Voila je rencontre un petit problème avec mon code.
Je faisais la formation Udemy sur les API Rest sur Symfony 4 : https://www.udemy.com/course/api-rest-avec-symfony-4-et-api-platform/learn/lecture/14976176#questions

J'en étais à l'étape des Fixtures.

Dans mon fichier AppFixtures, j'ai suivi la vidéo et ai donc un fichier comme suit:

<?php

namespace App\DataFixtures;
use App\Entity\Adherent;
use App\Entity\Livre;
use App\Entity\Pret;
use Doctrine\Bundle\FixturesBundle\Fixture;
use Doctrine\Common\Persistence\ObjectManager;
use Faker\Factory;

class AppFixtures extends Fixture
{
    private $manager;
    private $faker;
    private $repoLivre;

    public function __construct()
    {
        $this->faker=Factory::create("fr_FR");
    }

    public function load(ObjectManager $manager)
    {
        $this->manager=$manager;
        $this->repoLivre=$this->manager->getRepository(Livre::class);
        $this->loadAdherent();
        $this->loadPret();
    }

/**
 *    Création des adhérents
*/
    public function loadAdherent(){
(...supprimé pour lecture)
        }

        $this->manager->flush();
    }

    public function loadPret(){
    (...supprimé pour lecture)
            }
            $this->manager->persist($pret);
        }
        $this->manager->flush();
    }
}

J'aimerais déclencher les chargements des fixtures via mon CLI 

php bin/console doctrine:fixtures:load --append

J'ai 1 message d'erreur à l'execution:

In FileLoader.php line 180:

  Expected to find class "App\DataFixtures\AppFixtures" in file "C:\wamp64\www\biblioApi\src/DataFixtures\AppFixtures.php" while importing services from resource "../src/*", but it was not found! Check the namespace prefix used  
   with the resource in C:\wamp64\www\biblioApi\config/services.yaml (which is loaded in resource "C:\wamp64\www\biblioApi\config/services.yaml").                                                                                   

In FileLoader.php line 208:

  Expected to find class "App\DataFixtures\AppFixtures" in file "C:\wamp64\www\biblioApi\src/DataFixtures\AppFixtures.php" while importing services from resource "../src/*", but it was not found! Check the namespace prefix used  
   with the resource.

Dans mon fichier "service.yaml", j'ai : 

# This file is the entry point to configure your own services.
# Files in the packages/ subdirectory configure your dependencies.

# Put parameters here that don't need to change on each machine where the app is deployed
# https://symfony.com/doc/current/best_practices/configuration.html#application-related-configuration
parameters:

services:
    # default configuration for services in *this* file
    _defaults:
        autowire: true      # Automatically injects dependencies in your services.
        autoconfigure: true # Automatically registers your services as commands, event subscribers, etc.

    # makes classes in src/ available to be used as services
    # this creates a service per class whose id is the fully-qualified class name
    App\:
        resource: '../src/*'
        exclude: '../src/{DependencyInjection,Entity,Migrations,Tests,Kernel.php}'

    # controllers are imported separately to make sure services can be injected
    # as action arguments even if you don't extend any base controller class
    App\Controller\:
        resource: '../src/Controller'
        tags: ['controller.service_arguments']

    # add more service definitions when explicit configuration is needed
    # please note that last definitions always *replace* previous ones

Je ne vois pas s'il manque quelque chose dans un des fichiers. Etant un peu noob, je ne vois pas mon erreur.
D'avance merci :)

Aucune réponse