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Request URL: http://www.minenergia.gov.co/documents/10192/24078621/JOS%C3%89%20MANUEL+MORENO+CASALLAS.pdf/c5b0f270-c842-4636-9af5-eeaf5d7ccd0a
Raised by: wagtail.documents.views.serve.serve

This document does not match the given filename.

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.