1-metastases-detection-train-model.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/use-cases/computer_vision/1-metastases-detection-train-model.ipynb

Error:

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Exception encountered at "In [3]":
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ModuleNotFoundError Traceback (most recent call last)
in
9 from tqdm import tqdm
10 import matplotlib.pyplot as plt
---> 11 import cv2

ModuleNotFoundError: No module named 'cv2'

Start with the linked 1-metastases-detection-train-model.ipynb and reproduce the failure at In[3], where importing cv2 raises ModuleNotFoundError. Inspect how the CI environment provides notebook dependencies and verify the notebook runs successfully there. Done means the CI execution completes without the missing cv2 error.

Written by the indexing model from the issue text.