覆盖方法“ __construct（）的FOSUserBundle EmailConfirmationListener错误参数” $ mailer“

Question

也许有人可以帮助我。我在项目fos_user_bundle中使用Symfony 4。我在service.yaml中覆盖了EmailConfirmationListener，但是有一个错误：

Cannot autowire service "App\EventListener\EmailConfirmationListener": 
argument "$mailer" of method "__construct()" references interface 
"FOS\UserBundle\Mailer\MailerInterface" but no such service exists. You 
should maybe a  
lias this interface to one of these existing services: 
"App\Mailer\Mailer", "send_mail", "fos_user.mailer.default", 
"fos_user.mailer.twig_swift", "fos_user.mailer.noop". 

请参见下面的services.yaml文件：

fos_user.listener.email_confirmation:
    class:      App\EventListener\EmailConfirmationListener
    arguments:
    - '@send_mail'
    - '@fos_user.util.token_generator'
    - '@router'
    - '@session'
    tags:
    - { name: kernel.event_subscriber }

send_mail:
    class: App\Mailer\Mailer
    arguments:
        - '@mailer'
        - '@router'
        - '@templating'
        -
            confirmation.template: '%fos_user.registration.confirmation.template%'
            resetting.template: '%fos_user.resetting.email.template%'
            from_email:
                confirmation: '%fos_user.registration.confirmation.from_email%'
                resetting: '%fos_user.resetting.email.from_email%'

请帮帮我，我做错了什么？