Zend Framework通信应用程序找不到类

我正在阅读这本书，我在第3章中，这段代码返回了以下错误：致命错误：在第70行的/var/www/CommunicationApp/module/Users/src/Users/Controller/RegisterController.php中找不到类"Users''Model''User"

我想知道代码出了什么问题，或者如果不是代码，那是什么？

<?php
namespace Users'Controller;
use Zend'Mvc'Controller'AbstractActionController;
use Zend'View'Model'ViewModel;
use Users'Form'RegisterForm;
use Users'Form'RegisterFilter;
use Users'Model'User;
use Users'Model'UserTable;
class RegisterController extends AbstractActionController
{
public function indexAction()
{
    $form = new RegisterForm();
    $viewModel  = new ViewModel(array('form' => $form)); 
    return $viewModel; 
}
public function processAction()
{
    if (!$this->request->isPost()) {
        return $this->redirect()->toRoute(NULL , array( 
                    'controller' => 'register', 
                    'action' =>  'index' 
                ));
    }
    $post = $this->request->getPost();
    $form = new RegisterForm();
    $inputFilter = new RegisterFilter();
    $form->setInputFilter($inputFilter);
    $form->setData($post);
    if (!$form->isValid()) {
        $model = new ViewModel(array(
            'error' => true,
            'form'  => $form,
        ));
        $model->setTemplate('users/register/index');
        return $model;
    }
    // Create user
    $this->createUser($form->getData());
    return $this->redirect()->toRoute(NULL , array( 
                    'controller' => 'register', 
                    'action' =>  'confirm' 
                ));
}
public function confirmAction()
{
    $viewModel  = new ViewModel(); 
    return $viewModel; 
}
protected function createUser(array $data)
{
    $sm = $this->getServiceLocator();
    $dbAdapter = $sm->get('Zend'Db'Adapter'Adapter');
    $resultSetPrototype = new 'Zend'Db'ResultSet'ResultSet();
    $resultSetPrototype->setArrayObjectPrototype (new 'Users'Model'User); //line 70
    $tableGateway = new 'Zend'Db'TableGateway'TableGateway('user' /* table name  */, $dbAdapter, null, $resultSetPrototype);
    $user = new User();
    $user->exchangeArray($data);
    $userTable = new UserTable($tableGateway);
    $userTable->saveUser($user);
    return true;
 }
}