AttributeError at /rest-auth/register/ 'NoneType' object has no attribute '_meta'

gistfile1.txt

AttributeError at /rest-auth/register/
'NoneType' object has no attribute '_meta'
Request Method:	GET
Request URL:	http://localhost:8000/rest-auth/register/
Django Version:	1.6.5
Exception Type:	AttributeError
Exception Value:	
'NoneType' object has no attribute '_meta'
Exception Location:	/vagrant/altaipsum/rest_auth/serializers.py in Meta, line 44
Python Executable:	/usr/bin/python
Python Version:	2.7.6
Python Path:	
['/vagrant/altaipsum',
 '/usr/lib/python2.7',
 '/usr/lib/python2.7/plat-x86_64-linux-gnu',
 '/usr/lib/python2.7/lib-tk',
 '/usr/lib/python2.7/lib-old',
 '/usr/lib/python2.7/lib-dynload',
 '/usr/local/lib/python2.7/dist-packages',
 '/usr/lib/python2.7/dist-packages']
Server time:	Wed, 2 Jul 2014 12:10:56 +0000
Traceback

####

Environment:


Request Method: GET
Request URL: http://localhost:8000/rest-auth/register/

Django Version: 1.6.5
Python Version: 2.7.6
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'registration',
 'rest_framework',
 'rest_auth')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
  99.                 resolver_match = resolver.resolve(request.path_info)
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in resolve
  337.             for pattern in self.url_patterns:
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in url_patterns
  365.         patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in urlconf_module
  360.             self._urlconf_module = import_module(self.urlconf_name)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
  40.         __import__(name)
File "/vagrant/altaipsum/altaipsum/urls.py" in <module>
  12.     url(r'^rest-auth/', include('rest_auth.urls')),
File "/usr/local/lib/python2.7/dist-packages/django/conf/urls/__init__.py" in include
  26.         urlconf_module = import_module(urlconf_module)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
  40.         __import__(name)
File "/vagrant/altaipsum/rest_auth/urls.py" in <module>
  4. from rest_auth.views import Login, Logout, Register, UserDetails, \
File "/vagrant/altaipsum/rest_auth/views.py" in <module>
  27. from .serializers import TokenSerializer, UserDetailsSerializer, \
File "/vagrant/altaipsum/rest_auth/serializers.py" in <module>
  36. class UserRegistrationProfileSerializer(serializers.ModelSerializer):
File "/vagrant/altaipsum/rest_auth/serializers.py" in UserRegistrationProfileSerializer
  41.     class Meta:
File "/vagrant/altaipsum/rest_auth/serializers.py" in Meta
  44.                         map(lambda x: x.name, model._meta.fields))

Exception Type: AttributeError at /rest-auth/register/
Exception Value: 'NoneType' object has no attribute '_meta'