Page not found (404)

Request Method: GET
Request URL: http://mera.mn/mn/sample-page/%D1%82%D2%AF%D2%AF%D1%85%D0%B8%D0%B9%D0%BD-%D1%85%D1%83%D1%83%D0%B4%D0%B0%D1%81/

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.