Page not found (404)

Request Method:	GET
Request URL:	http://lapapeleta.cu/activities/exposicion-de-artes-visuales-decimal/?a=a&ages=todos-los-publicos&category=artes-plasticas&region=ciego-de-avila
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.