Reverse for 'send_private_file' not found. Django 4.0

[jodusan]

Do I have to name the view as 'send_private_file' ?

I get the following error

django.urls.exceptions.NoReverseMatch: Reverse for 'serve_private_file' not found. 'serve_private_file' is not a valid view function or pattern name.

[Chrescht]

I solved it by removing the url import lines from app/urls.py to project/urls.py.
project/urls.py:

...
import private_storage.urls
urlpatterns = [
    ...
    path('app/', include(('app.urls', 'app'), namespace='app')),
    re_path('^private-media/', include(private_storage.urls)),
]

This happened most likely because I have namespaces defined in app/urls.py so the private_storage.urls were not visible any more.