Page not found (404)

Request Method: GET
Request URL: http://localhost/kirovskij-oblastnoj-kraevedcheskij-muzej-s-6-dekabrya-2018-goda-po-13-yanvarya-2019-goda-priglashaet-vsex-zhelayushhix-na-vystavku-zolotoj-poceluj/
Raised by: django.contrib.flatpages.views.flatpage

No FlatPage matches the given query.

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.