Image-classification-lst-format-highlevel.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/introduction_to_amazon_algorithms/imageclassification_caltech/Image-classification-lst-format-highlevel.ipynb

Error:

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Exception encountered at "In [4]":
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CalledProcessError Traceback (most recent call last)
in
----> 1 get_ipython().run_cell_magic('bash', '', '\nmkdir -p caltech_256_train_60\nfor i in 256_ObjectCategories/*; do\n c=`basename $i`\n mkdir -p caltech_256_train_60/$c\n for j in `ls $i/*.jpg | shuf | head -n 60`; do\n mv $j

[...]

CalledProcessError: Command 'b'\nmkdir -p caltech_256_train_60\nfor i in 256_ObjectCategories/*; do\n c=`basename $i`\n mkdir -p caltech_256_train_60/$c\n for j in `ls $i/*.jpg | shuf | head -n 60`; do\n mv $j caltech_256_train_60/$c/\n done\ndone\n\npython im2rec.py --list --recursive caltech-256-60-train caltech_256_train_60/\npython im2rec.py --list --recursive caltech-256-60-val 256_ObjectCategories/\n'' returned non-zero exit status 1.

Open Image-classification-lst-format-highlevel.ipynb from the linked example and start by rerunning cell In [4], which invokes shell commands for dataset preparation and im2rec.py. Investigate the non-zero exit status and verify that the notebook completes successfully and CI passes.

Written by the indexing model from the issue text.