PUGXMultiUserBundle出错

Question

我使用此文档 https://github.com/PUGX/PUGXMultiUserBundle/blob/master/Resources/doc/index.md 安装了PUGXMultiUserBundle 我有两个问题：     首先，我不知道应该把用户管理器放在哪里

$discriminator = $this->container->get('pugx_user.manager.user_discriminator');
$discriminator->setClass('Acme\UserBundle\Entity\UserOne');

$userManager = $this->container->get('pugx_user_manager');

$userOne = $userManager->createUser();

$userOne->setUsername('admin');
$userOne->setEmail('admin@mail.com');
$userOne->setPlainPassword('123456');
$userOne->setEnabled(true);

$userManager->updateUser($userOne, true);

和其他事情，当我尝试运行注册页面时，我有这个错误：

UserDiscriminator, error getting form type : "MyApp\UserBundle\Form\Type\RegistrationUserOneFormType" not found

谢谢你的帮助