Problème connexion base de donnée symfony 4 (Doctrine)

Bonjour a tous,

Je suis débutant en symfony et je rencontre un problème lors de la connexion a la data base via doctrine sur symfony 4.4

J'ai effectué les commandes suivantes :

composer require symfony/orm-pack

Using version ^1.0 for symfony/orm-pack
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.4.*"
Nothing to install or update
Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.
Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Use laminas/laminas-eventmanager instead.
Generating autoload files
ocramius/package-versions:  Generating version class...
ocramius/package-versions: ...done generating version class
Executing script cache:clear [OK]
Executing script assets:install public [OK]

composer require --dev symfony/maker-bundle

Using version ^1.14 for symfony/maker-bundle
./composer.json has been updated
Loading composer repositories with package information
Updating dependencies (including require-dev)
Restricting packages listed in "symfony/symfony" to "4.4.*"
Nothing to install or update
Package zendframework/zend-code is abandoned, you should avoid using it. Use laminas/laminas-code instead.
Package zendframework/zend-eventmanager is abandoned, you should avoid using it. Use laminas/laminas-eventmanager instead.
Generating autoload files
ocramius/package-versions:  Generating version class...
ocramius/package-versions: ...done generating version class
Executing script cache:clear [OK]
Executing script assets:install public [OK]

php bin/console doctrine:database:create

Erreur suivante :

In AbstractMySQLDriver.php line 93:

  An exception occurred in driver: SQLSTATE[HY000] [2002] Connection refused  


In PDOConnection.php line 31:

  SQLSTATE[HY000] [2002] Connection refused  


In PDOConnection.php line 27:

  SQLSTATE[HY000] [2002] Connection refused  

fichier .env :

# In all environments, the following files are loaded if they exist,
# the latter taking precedence over the former:
#
#  * .env                contains default values for the environment variables needed by the app
#  * .env.local          uncommitted file with local overrides
#  * .env.$APP_ENV       committed environment-specific defaults
#  * .env.$APP_ENV.local uncommitted environment-specific overrides
#
# Real environment variables win over .env files.
#
# DO NOT DEFINE PRODUCTION SECRETS IN THIS FILE NOR IN ANY OTHER COMMITTED FILES.
#
# Run "composer dump-env prod" to compile .env files for production use (requires symfony/flex >=1.2).
# https://symfony.com/doc/current/best_practices.html#use-environment-variables-for-infrastructure-configuration

###> symfony/framework-bundle ###
APP_ENV=dev
APP_SECRET=c946936ac93ee49e13e2c0e99cb7d527
#TRUSTED_PROXIES=127.0.0.0/8,10.0.0.0/8,172.16.0.0/12,192.168.0.0/16
#TRUSTED_HOSTS='^(localhost|example\.com)$'
###< symfony/framework-bundle ###

###> symfony/mailer ###
# MAILER_DSN=smtp://localhost
###< symfony/mailer ###

###> doctrine/doctrine-bundle ###
# Format described at https://www.doctrine-project.org/projects/doctrine-dbal/en/latest/reference/configuration.html#connecting-using-a-url
# For an SQLite database, use: "sqlite:///%kernel.project_dir%/var/data.db"
# For a PostgreSQL database, use: "postgresql://db_user:db_password@127.0.0.1:5432/db_name?serverVersion=11&charset=utf8"
# IMPORTANT: You MUST configure your server version, either here or in config/packages/doctrine.yaml
DATABASE_URL=mysql://root:root@127.0.0.1:3306/monprojet
###< doctrine/doctrine-bundle ###

fichier doctrine.yaml :

doctrine:
    dbal:
        url: '%env(resolve:DATABASE_URL)%'

        # IMPORTANT: You MUST configure your server version,
        # either here or in the DATABASE_URL env var (see .env file)
        #server_version: '5.7'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: annotation
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App

Je précise que la connexion au serveur local de symfony fonctionne , j'ai essayer de changer le port MySQL dans MAMP "3306" sans succès.

j'ai fais des recherches sur plusieurs forum je ne comprend pas comment résoudre mon erreur si quelqu'un a une piste ..
Merci d'avance !