Page not found (404)

Request Method: GET
Request URL: https://kras-stolby.ru/activity/seminar-organizaciya-i-tehnologiya-tusheniya-p-21/
Raised by: apps.activity.views.detail.CatalogDetailView

Не найден ни один Деятельность, соответствующий запросу

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.