Page not found (404)

Request Method: GET
Request URL: https://ummash.ru/article/%D0%9E%D1%82+995+%D1%80%D1%83%D0%B1
Raised by: apps.domains.views.RouterView

You're seeing this error because you have DEBUG = True in your Django settings file. Change that to False, and Django will display a standard 404 page.