$ php bin/console server:run
[SymfonyComponentConfigDefinitionExceptionInvalidConfigurationException]
The child node "db_driver" at path "fos_user" must be configured.
必须新建一个USer类
$ php bin/console server:run
[SymfonyComponentConfigDefinitionExceptionInvalidConfigurationException]
The child node "db_driver" at path "fos_user" must be configured.
必须新建一个USer类