Page not found (404)

Request Method: GET
Request URL: http://ulaanbaatarbuyan.mn/%D1%87%D0%B0%D0%BD%D0%B4%D0%B0%D1%80%D1%8B%D0%BD-%D1%8D%D1%81%D0%B3%D0%B8%D0%B9-%D1%83%D1%83%D1%82-2/

Шүүлтүүрт таарах slug олдсонгүй

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.