Page not found (404)

Request Method:	GET
Request URL:	https://library.lib.sfedu.ru/media/source/%D0%9F%D1%80%D0%B8%D0%BA%D1%80%D0%B5%D0%BF%D0%BB%D0%B5%D0%BD%D0%BD%D1%8B%D0%B5%20%D1%84%D0%B0%D0%B9%D0%BB%D1%8B/reaxys060220/RMC%20Heatmap%20Quick%20Start%20Guide%2006-02-17.pdf
Raised by:	django.views.static.serve

“/var/www/localhost/django/hive/media/source/Прикрепленные файлы/reaxys060220/RMC Heatmap Quick Start Guide 06-02-17.pdf” не существует

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.