找不到学说错误服务

Question

在尝试生成新实体时，只是来自Symfony的错误， 找不到服务原则，[Symfony\Component\DependencyInjection\Exception\ServiceNotFoundException]
You have requested a non-existent service "doctrine" 进一步的数据库系统是MongoDB，在config.yml

中配置

doctrine_mongodb:
connections:
    default:   
        server: mongodb://localhost:27017
        options: {}
default_database: social
document_managers:
    default:
        auto_mapping: true