object_detection_image_json_format.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/introduction_to_amazon_algorithms/object_detection_pascalvoc_coco/object_detection_image_json_format.ipynb

Error:

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Exception encountered at "In [9]":
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FileNotFoundError Traceback (most recent call last)
in
1 file_name = './annotations/instances_val2017.json'
----> 2 with open(file_name) as f:
3 js = json.load(f)
4 images = js['images']
5 categories = js['categories']

FileNotFoundError: [Errno 2] No such file or directory: './annotations/instances_val2017.json'

Open object_detection_image_json_format.ipynb and inspect In [9], where ./annotations/instances_val2017.json is opened. Reproduce the CI failure and check how the notebook expects that annotation file to be available. Done means the notebook no longer raises FileNotFoundError in CI.

Written by the indexing model from the issue text.