Hosting python model on Tableau server - ConnectionError

Question

I've created a regression model in Python and trying to host the model on Tableau.. I'm using this article as reference: Link

This is what I tried:

De-pickle model:

rf_reg = pickle.load(open('CostEngine.pkl','rb'))

Try to host locally first:

client = Client('http://localhost:9004/')

client.deploy('Cost Engine',
rf_reg,
'Cost Engine returns logistics costs.'
, override = True)

However I'm getting this error: ConnectionError: ('Connection aborted.', BadStatusLine('ÿ\x00\x00\x00\x00\x00\x00\x00\x01\x7f'))