django rest framework: type object 'Token' has no attribute 'objects'

The error

When you use the ObtainAuthToken to create an authentication token using rest framework you can get the following error (scroll down for solution):

Error
Traceback (most recent call last):
  File "/opt/project/user/tests/test_user_api.py", line 76, in test_create_token_for_user
    res = self.client.post(reverse('user:token'), payload)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/test.py", line 294, in post
    path, data=data, format=format, content_type=content_type, **extra)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/test.py", line 207, in post
    return self.generic('POST', path, data, content_type, **extra)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/test.py", line 232, in generic
    method, path, data, content_type, secure, **extra)
  File "/usr/local/lib/python3.7/site-packages/django/test/client.py", line 421, in generic
    return self.request(**r)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/test.py", line 283, in request
    return super().request(**kwargs)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/test.py", line 235, in request
    request = super().request(**kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/test/client.py", line 496, in request
    raise exc_value
  File "/usr/local/lib/python3.7/site-packages/django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "/usr/local/lib/python3.7/site-packages/django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/django/views/generic/base.py", line 71, in view
    return self.dispatch(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 505, in dispatch
    response = self.handle_exception(exc)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 465, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
    raise exc
  File "/usr/local/lib/python3.7/site-packages/rest_framework/views.py", line 502, in dispatch
    response = handler(request, *args, **kwargs)
  File "/usr/local/lib/python3.7/site-packages/rest_framework/authtoken/views.py", line 46, in post
    token, created = Token.objects.get_or_create(user=user)
AttributeError: type object 'Token' has no attribute 'objects'

Solution

Add 'rest_framework.authtoken' to INSTALLED_APPS in your settings.py configuration file.