Security.yaml access_control is not correct

[gundesli]

In security.yaml the access_control part is useless and content an error :

    access_control:
        # this is a catch-all for the admin area
        # additional security lives in the controllers
        - { path: '^/{_locale}/admin', roles: ROLE_ADMIN }

this line not working because {_locale} is not a regular expression (which can be misleading) :

    - { path: '^/{_locale}/admin', roles: ROLE_ADMIN }

The security of controller Admin\BlogController is managed by the attribute IsGranted :

#[Route('/admin/post')]
#[IsGranted(User::ROLE_ADMIN)]
final class BlogController extends AbstractController
{
//...
}