Page not found (404)

Request Method: GET
Request URL: https://ummash.ru/article/%D0%AD%D0%B2%D0%B5%D1%80+%D0%90%D1%84%D1%82%D0%B5%D1%80+%D0%A5%D0%B0%D0%B9+%D0%AD%D0%BF%D0%BF%D0%BB+%D0%92%D0%B0%D0%B9%D1%82+%D0%BA%D1%83%D0%BF%D0%B8%D1%82%D1%8C
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.