Dropbox raising content restricted LookupError when downloading file with dropbox.files_download

I made a small script to download various pre-existing blocks of data uploaded by another script.

def fetch(id):
    file = "".join(["/data-", str(id),".bin"])
    md, f = dbx.files_download(file)
    data = f.content
    return data

The code almost perfectly follows the example provided with the API, however when ran it throws this error:

dropbox.exceptions.ApiError: ApiError('8c03cf1b5fb662a78c77d32c8d0ade29', DownloadError('path', LookupError('restricted_content', None)))

 It works neither on my laptop nor my docker container.

Any help or pointers would be appreciated.