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Request URL: http://www.minenergia.gov.co/documents/10192/23975432/190718_agenda_regula_energia_2018_v2.xlsx/833ab1df-5034-44af-9a36-4c76a08913fc
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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.