Django Rest Framework에서 '모듈'개체를 호출 할 수 없습니다.

나는 api에 대한 django rest 프레임 워크를 배우려고합니다. 설명서를 따르고 모든 가져 오기를 확인했지만 typeerror : 'module'object is not callable

Views.py

from rest_framework import viewsets
from .serializer import CategorySerializer
from .models import CategoryModel

class FirstView(viewsets.ModelViewSet):
    queryset = CategoryModel.objects.all().order_by('name')
    serializer_class = CategorySerializer

serializers.py

from rest_framework import serializers

from .models import CategoryModel

class CategorySerializer(serializers.ModelSerializer):
    class Meta:
        model = CategoryModel
        field = ['name', 'description']

urls.py

from django.urls import path, include

from rest_framework.routers import DefaultRouter
from . import views

router = DefaultRouter()

router.register(r'', views.FirstView)

urlpatterns = [
    path('', include(router.urls))
]

오류

Internal Server Error: /api/category/
Traceback (most recent call last):
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\exception.py", line 34, in inner
    response = get_response(request)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\core\handlers\base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\django\views\decorators\csrf.py", line 54, in wrapped_view
    return view_func(*args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\viewsets.py", line 125, in view
    return self.dispatch(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 492, in dispatch
    request = self.initialize_request(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\viewsets.py", line 146, in initialize_request
    request = super().initialize_request(request, *args, **kwargs)
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 394, in initialize_request
    authenticators=self.get_authenticators(),
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 272, in get_authenticators
    return [auth() for auth in self.authentication_classes]
  File "C:\Users\aashu\.virtualenvs\lcodev-xFWoZVV6\lib\site-packages\rest_framework\views.py", line 272, in <listcomp>
    return [auth() for auth in self.authentication_classes]
TypeError: 'module' object is not callable

이것은 DjangoRestFramework 용 settings.py입니다.

settings.py

REST_FRAMEWORK = {
     'DEFAULT_AUTHENTICATION_CLASSES': [
        'rest_framework.authentication.BasicAuthentication',
        'rest_framework.authentication.SessionAuthentication',
        'rest_framework.authtoken',
    ],
    'DEFAULT_PERMISSION_CLASSES': [
        'rest_framework.permissions.DjangoModelPermissionsOrAnonReadOnly'
    ]
}