Error 500 when calling one of the REST endpoints using Python3

Summary

Returning HTTP 500 when calling Legacy RESTAPI, start export task

Content

Hi there,

I'm attempting to call the Legacy REST API so I can test starting export tasks. My account is not being upgraded to version 20.1.1 for another month or two. 

I've so far been able to authorize my details to get an access token, and this has worked when using the "Get Export List" method.

For some reason when I try to start new export dates within valid date ranges, there is a 500 internal server error.

Code:

class HTTP:

    def __init__(self, idcs_hostname, scope_url, client_id, client_secret