Page not found (404)

Request Method: GET
Request URL: http://lefrat.ru/blog/tag/%D0%B2%D0%B0%D0%B3%D0%BE%D0%BD%D0%BA%D0%B0/
Raised by: mezzanine.blog.views.blog_post_list

No Keyword 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.