No transport supports the given Messenger DSN

Question

When trying to configure symfony messenger always getting error No transport supports the given Messenger DSN "doctrine://default".

symfony framework: 4.3.4

messenger: 4.3.0

In this application only doctrine-bundle & symfony-messenger is installed.

doctrine:

doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                schema_filter: '~^(?!messenger_messages)~'
                dbname: sftest
                host: 127.0.0.1
                port: ~
                user: root
                password: ~
                charset: "UTF8"
                driver: 'pdo_mysql'
                server_version: '5.7'
                default_table_options:
                    charset: utf8mb4
                    collate: utf8mb4_unicode_ci

messenger:

framework:
  messenger:
    transports:
      async: doctrine://default
    routing:
      'App\Entity\Notification': async

Answer 1

So the problem was that symfony messenger require doctrine orm, and I only was using symfony dbal.