chainer_sentiment_analysis.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/sagemaker-python-sdk/chainer_sentiment_analysis/chainer_sentiment_analysis.ipynb

Error:

---------------------------------------------------------------------------
Exception encountered at "In [2]":
---------------------------------------------------------------------------
ModuleNotFoundError Traceback (most recent call last)
in
----> 1 import dataset
2
3 file_paths = dataset.download_dataset("stsa.binary")
4
5 new_file_paths = dataset.get_stsa_dataset(file_paths)

/opt/ml/processing/input/dataset.py in
21
22 import numpy
---> 23 import chainer
24
25 from src.nlp_utils import transform_to_array, split_text, normalize_text, make_vocab

ModuleNotFoundError: No module named 'chainer'

Open sagemaker-python-sdk/chainer_sentiment_analysis/chainer_sentiment_analysis.ipynb and inspect the environment used by CI for cell In [2]. Reproduce the import failure and verify that the notebook's required Chainer dependency is available in that environment; done means the notebook runs past the failing cell in CI.

Written by the indexing model from the issue text.