get_started_mnist_deploy.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/frameworks/pytorch/get_started_mnist_deploy.ipynb

Error:

---------------------------------------------------------------------------
Exception encountered at "In [1]":
---------------------------------------------------------------------------
JSONDecodeError Traceback (most recent call last)
in
11 # Get global config
12 with open('code/config.json', 'r') as f:
---> 13 CONFIG=json.load(f)
14
15 sess = Session()

/opt/conda/lib/python3.6/json/__init__.py in load(fp, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)
297 cls=cls, object_hook=object_hook,
298 parse_float=parse_float, parse_int=parse_int,
--> 299 parse_constant=parse_constant, object_pairs_hook=object_pairs_hook, **kw)
300
301

/opt/conda/lib/python3.6/json/__init__.py in loads(s, encoding, cls, object_hook, parse_float, parse_int, parse_constant, object_pairs_hook, **kw)

[...]

JSONDecodeError: Expecting value: line 1 column 1 (char 0)

Start with frameworks/pytorch/get_started_mnist_deploy.ipynb and inspect the code/config.json file it opens in the first cell. Reproduce the notebook's CI failure and determine why that file cannot be decoded as JSON. Done means the notebook runs successfully in CI without the JSONDecodeError.

Written by the indexing model from the issue text.