access denied doesn't work symfony - symfony

Question

I have a small problem on the redirection when the access of the page is refused to the user when the latter does not have the right role.
Instead of being redirected to the index, it is redirected to the login page, although in my code I put: access_denied_url: /
For example I try to access the next page with the wrong role:
- {path: ^/dashboard, role: ROLE_SONATA_ADMIN}
I would like him to redirect me to the index, instead of the login page
My security.yml:
# To get started with security, check out the documentation:
# https://symfony.com/doc/current/security.html
security:
access_denied_url: /
role_hierarchy:
ROLE_ADMIN: [ROLE_USER, ROLE_SONATA_ADMIN]
ROLE_SUPER_ADMIN: [ROLE_ADMIN, ROLE_ALLOWED_TO_SWITCH]
SONATA:
- ROLE_SONATA_PAGE_ADMIN_PAGE_EDIT # if you are using acl then this line must be commented
# https://symfony.com/doc/current/security.html#b-configuring-how-users-are-loaded
providers:
in_memory:
memory: ~
fos_userbundle:
id: fos_user.user_provider.username_email
firewalls:
# disables authentication for assets and the profiler, adapt it according to your needs
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
admin:
pattern: ^/
form_login:
provider: fos_userbundle
login_path: /login
use_forward: false
check_path: /login_check
failure_path: /login
default_target_path: /dashboard
remember_me: false
logout:
path: /logout
target: /
invalidate_session: true # the authenticated session will be unavailable afterwards
anonymous: true
encoders:
FOS\UserBundle\Model\UserInterface: sha512
acl:
connection: default
access_control:
- { path: ^/login$, role: IS_AUTHENTICATED_ANONYMOUSLY }
- { path: ^/register, role: IS_AUTHENTICATED_ANONYMOUSLY }
- { path: ^/resetting, role: IS_AUTHENTICATED_ANONYMOUSLY }
- { path: ^/admin/*, role: ROLE_SUPER_ADMIN }
- { path: ^/admin/dashboard, role: ROLE_SUPER_ADMIN }
- { path: ^/dashboard, role: ROLE_SONATA_ADMIN }
My rounting.yml :
mybundle:
resource: "#MyBundle/Controller/"
type: annotation
prefix: /
#app:
# resource: '#AppBundle/Controller/'
# type: annotation
admin_area:
resource: "#SonataAdminBundle/Resources/config/routing/sonata_admin.xml"
prefix: /admin
sonata_user_security:
resource: "#SonataUserBundle/Resources/config/routing/sonata_security_1.xml"
sonata_user_resetting:
resource: "#SonataUserBundle/Resources/config/routing/sonata_resetting_1.xml"
prefix: /resetting
sonata_user_profile:
resource: "#SonataUserBundle/Resources/config/routing/sonata_profile_1.xml"
prefix: /profile
sonata_user_register:
resource: "#SonataUserBundle/Resources/config/routing/sonata_registration_1.xml"
prefix: /register
sonata_user_change_password:
resource: "#SonataUserBundle/Resources/config/routing/sonata_change_password_1.xml"
prefix: /profile
_sonata_admin:
resource: .
type: sonata_admin
prefix: /admin
sonata_user_admin_security:
resource: '#SonataUserBundle/Resources/config/routing/admin_security.xml'
prefix: /admin
sonata_user_admin_resetting:
resource: '#SonataUserBundle/Resources/config/routing/admin_resetting.xml'
prefix: /admin/resetting
fos_user_group:
resource: "#FOSUserBundle/Resources/config/routing/group.xml"
prefix: /group
Thank you