Unable to fetch attachment history

[Gunjan preet]

Function Used:

confluence.get_attachment_history(input('attachment_id: '), limit=200, start=0)

ERROR :

raise HTTPError(http_error_msg, response=self)
requests.exceptions.HTTPError: 404 Client Error: Not Found for url: https://sih-piet-2020.atlassian.net/wiki/rest/experimental/content/19857418/version?limit=200&start=0

#Tried attachment Id as "att19857418" and "19857418" as a number.