Page not found (404)

Request Method: GET
Request URL: http://tg.mn/iseo-%D1%86%D0%BE%D0%BE%D0%B6/door-closers/

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.