Google cloud ML with Scikit-Learn raises: 'dict' object has no attribute 'lower'

Question

I used the following tutorial to use my Scikit-learn sentiment-analysis model in Google Cloud: https://cloud.google.com/ml-engine/docs/scikit/quickstart

My model defined

Answer 1

As discussed in the comments, the file which contains the JSON_INSTANCES needs to have a single JSON on each line.

In this case it would be

"the quick brown fox"
"another test"

which may look weird but it is a valid JSON.