cannot import name 'url' from 'django.conf.urls'

[nmmapper]

This error happens with django 4+ as the 'django.conf.urls' id depreciated

from django.conf.urls import url
from docs.views import DocsRootView, serve_docs
urlpatterns = [
    url(r'^$', DocsRootView.as_view(permanent=True), name='docs_root'),