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Request URL: http://www.minenergia.gov.co/documents/10192/24142198/151019_251019_Establecimiento+del+Sistema+Integral+de+Gesti%C3%B3n+Minera+-SIGM.xlsx/67689d09-380d-499b-aeee-df719340d19e
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.