php-phpbb/phpBB/config/default/container/services_event.yml

services:
    dispatcher:
        class: phpbb\event\dispatcher
        arguments:
            - '@service_container'

    kernel_exception_subscriber:
        class: phpbb\event\kernel_exception_subscriber
        arguments:
            - '@template'
            - '@language'
            - '%debug.exceptions%'
        tags:
            - { name: kernel.event_subscriber }

    kernel_terminate_subscriber:
        class: phpbb\event\kernel_terminate_subscriber
        tags:
            - { name: kernel.event_subscriber }

    symfony_response_listener:
        class: Symfony\Component\HttpKernel\EventListener\ResponseListener
        arguments:
            - UTF-8
        tags:
            - { name: kernel.event_subscriber }