create_training_job_encrypt_static_assets.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/sagemaker-fundamentals/create-training-job/create_training_job_encrypt_static_assets.ipynb

Error:

---------------------------------------------------------------------------
Exception encountered at "In [4]":
---------------------------------------------------------------------------
ValueError Traceback (most recent call last)
in
24
25 if kms_key is None:
---> 26 raise ValueError("Supply a valid KMS key id or create a new one")

ValueError: Supply a valid KMS key id or create a new one

Open the linked create_training_job_encrypt_static_assets.ipynb and inspect cell In [4], where CI raises the reported ValueError. Run the notebook or its CI validation to determine why kms_key is None. Done means the notebook supplies or creates a valid KMS key and completes validation without this error.

Written by the indexing model from the issue text.