Page not found (404)

Request Method: GET
Request URL: https://nn.najah.edu/news/Art/2018/07/20/139974/www.youtube.com/watch/?v=p8ebN39d1BA
Raised by: django.contrib.flatpages.views.flatpage

No FlatPage 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.