Connection Error

I have Marketstore running @ localhost:5993, but running into this error.

ConnectionError: HTTPConnectionPool(host='localhost', port=5993): Max retries exceeded with url: / (Caused by NewConnectionError(': Failed to establish a new connection: [Errno 111] Connection refused'))

import pymarketstore as pymkts
param = pymkts.Params('BTC', '1Min', 'OHLCV', limit=10)
cli = pymkts.Client(endpoint='http://localhost:5993/rpc')

reply = cli.query(param) <-- This is where the error occurs.