03c_pytorch_preprocessing.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/prep_data/image_data_guide/03c_pytorch_preprocessing.ipynb

Error:

---------------------------------------------------------------------------
Exception encountered at "In [5]":
---------------------------------------------------------------------------
FileNotFoundError Traceback (most recent call last)
in
1 sample = tv.datasets.ImageFolder(
2 root='data_structured/train',
----> 3 transform=tv.transforms.ToTensor())
4
5 sample_resized = tv.datasets.ImageFolder(

/opt/conda/lib/python3.6/site-packages/torchvision/datasets/folder.py in __init__(self, root, transform, target_transform, loader, is_valid_file)
227 transform=transform,
228 target_transform=target_transform,
--> 229 is_valid_file=is_valid_file)
230 self.imgs = self.samples

/opt/conda/li

[...]

FileNotFoundError: [Errno 2] No such file or directory: 'data_structured/train'

Open prep_data/image_data_guide/03c_pytorch_preprocessing.ipynb and inspect the setup leading to In [5], where torchvision.datasets.ImageFolder cannot find data_structured/train. Run the notebook or its CI check to reproduce the FileNotFoundError; done means the notebook completes that step without the missing-path failure.

Written by the indexing model from the issue text.