Page not found (404)

Request Method: GET
Request URL: http://moygrad.kiev.ua/tags/%D0%90%D0%BD%D0%B4%D1%80%D0%B5%D0%B5%D0%B2%D1%81%D0%BA%D0%B8%D0%B9%20%D1%81%D0%BF%D1%83%D1%81%D0%BA/
Raised by: posts.views.tag

Tag does not exist

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.