Internal Server Error on Semantic Layer Query Setup

[Former Member]

Hello all, so I am trying to create a query through the BI Semantic Layer API but when I try to create it I get the following traceback:

Traceback (most recent call last):
  File "kboxClassScript.py", line 207, in <module>
    main()
  File "kboxClassScript.py", line 202, in main
    a = parser.test_query()
  File "kboxClassScript.py", line 88, in test_query
    resp = urllib.request.urlopen(urllib.request.Request(self.sl_url + '/queries', d.encode('utf-8'), self.headers))
  File "/usr/lib/python3.6/urllib/request.py", line 223, in urlopen
    return opener.open(url, data, timeout)
  File "/usr/lib/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 500: Internal Server Error

This is my function:

d = "<query xmlns='myurl/sl/universe' id='test_query' dataSourceType='unv|unx' dataSourceId='630719'> \
                <querySpecification version='1.0'> \
                <queryOptions> \
                    <queryOption name='duplicatedRows' value='true'/> \
                    <queryOption name='maxRetrievalTimeInSeconds' activated='false' value='6'/> \
                    <queryOption name='maxRowsRetrieved' activated='true' value='50'/> \
                    <queryOption name='samplingResultSetSize' activated='false' value='60'> \
                    <queryOption name='samplingResultSetFixed' activated='false' value='false'> \
                </queryOptions> \
            </querySpecification> \
            </query>"
        resp = urllib.request.urlopen(urllib.request.Request(self.sl_url + '/queries', d.encode('utf-8'), self.headers))
        js = json.loads(resp.read().decode('utf-8'))
        print(resp)
        return js

My headers are json and my data is xml but I would assume if that were the issue I'd be getting some 400 level error about a bad request. Any ideas on what might be the issue? Thanks in advance!