问"Auth->identify()“总是返回false - CakePHP 3.5

EN

public function login() {
    if ($this->request->is('post')) {
        $auth = $this->Auth->identify(); // Returns false
        debug($this->request->getData()); // Return email & with unhashed password
        debug($auth);
        if ($auth) {
            $this->Auth->setUser($auth);
            $this->redirect($this->Auth->redirectUrl());
        } else {
            $this->Flash->error('E-mail or password is wrong.');
        }
    }
}

public function register() {
    $user = $this->Users->newEntity();
    $this->set('user', $user);

    $this->loadModel('Groups');
    $group = $this->Groups->newEntity();
    $this->set('group', $user);

    if ($this->request->is('post')) {

        // Check if passwords matches
        $pass = $this->request->getData('password');
        $con_pass = $this->request->getData('password_confirm');

        if ($pass !== $con_pass) {
            return $this->Flash->error('Passwords don\'t match');
        }

        // Patch entities
        $group = $this->Groups->patchEntity($group, $this->request->getData());
        $user = $this->Users->patchEntity($user, $this->request->getData());

        // Make group and user
        if (empty($group->errors()) && empty($user->errors())) {
            // Group
            if (!$this->Groups->save($group)) {
                return $this->Flash->error('Something went wrong');
            }

            // User
            $user->group_id = $group->id;
            if ($this->Users->save($user)) {
                $this->Flash->success('Welkom ' . $user->name . '!');
                // return $this->redirect(['action' => 'register']);
            } else {
                return $this->Flash->error('something went wrong2');
            }
        }
    }
}

        $this->loadComponent('Auth', [
        'userModel' => 'Users',
        'loginAction' => [
            'controller' => 'Users',
            'action' => 'login'
        ],
        'authenticate' => [
            'Form' => [
                'fields' => [
                    'username' => 'email',
                    'password' => 'password'
                ]
            ]
        ],
        //'authError' => false,
        'storage' => 'Session'
    ]);

    <?= $this->Form->create('User'); ?>
    <?= $this->Form->email('email', ['placeholder' => 'E-mail', 'maxlength' => '42', 'label' => false]) ?>
    <?= $this->Form->password('password', ['type' => 'password', 'placeholder' => 'Wachtwoord', 'maxlength' => '32', 'label' => false]) ?>
    <?= $this->Form->submit('Login', ['class' => 'button']) ?>
<?= $this->Form->end(); ?>

class User extends Entity {

protected $_accessible = [
    'group_id' => true,
    'name' => true,
    'email' => true,
    'password' => true,
    'profile_img_url' => true,
    'pass_reset_time' => true,
    'creation_date' => true,
    'modified_date' => true
];

protected function _setPassword($password) {
    return (new DefaultPasswordHasher)->hash($password);
}

protected $_hidden = [
    'password'
];