doctrine_migrations:
    dir_name:   %kernel.root_dir%/migrations
    namespace:  Sylius\Migrations
    table_name: sylius_migrations
    name:       Sylius Migrations

doctrine_migrations:
    dir_name:   %kernel.root_dir%/migrations
    namespace:  App\Migrations
    table_name: app_migrations
    name:       App Migrations

Change default namespace of migration to App
Change default namespace of migration to App
