Page not found (404)

Request Method: GET
Request URL: http://www.bos-shelf.com/projects/2001-2004-az%C9%99ri-ciraq-gun%C9%99sli-layih%C9%99si/
Raised by: website.views.ProjectCategoryDetailView

No ProjectsCategory 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.