Page not found (404)

Request Method: GET
Request URL: http://www.hlwrankweil.at/schule/facher/kommunikations-und-mediendesign/
Raised by: subject.views.SubjectDetailView

Konnte keine Fächer mit diesen Parametern finden.

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.