Can you try the below code once? urls.py

from django.contrib import admin
from django.urls import include, path
from rest_framework.routers import DefaultRouter

import core.views
import een.views

router = DefaultRouter()

# Register core routes
router.register(r'core/settings', core.views.SettingsViewSet, basename='settings')
router.register(r'core/organization', core.views.OrgViewSet, basename='org')

# Register een routes
router.register(r'een/cvs', een.views.EENSettingsViewSet, basename='een-cvs')

urlpatterns = [
    path('api/', include(router.urls)),
    path('admin/', admin.site.urls),
    path('', include('rest_framework.urls', namespace='rest_framework')),
    path('api/tokenauth/', authviews.obtain_auth_token),
]