Page not found (404)

Request Method:	GET
Request URL:	http://lapapeleta.cu/activities/expo-colectiva-los-de-aqui-y-de-alla/?a=a&region=todas-las-provincias&category=artes-plasticas
Raised by:	lapapeleta.billboard.views.activities.ActivityDetail

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.