rl_cartpole_coach_gymEnv.ipynb failed CI

Link to the notebook:
https://github.com/aws/amazon-sagemaker-examples/blob/master/reinforcement_learning/rl_cartpole_coach/rl_cartpole_coach_gymEnv.ipynb

Error:

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Exception encountered at "In [1]":
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ModuleNotFoundError Traceback (most recent call last)
in
11 from time import gmtime, strftime
12 sys.path.append("common")
---> 13 from misc import get_execution_role, wait_for_s3_object
14 from sagemaker.rl import RLEstimator, RLToolkit, RLFramework

ModuleNotFoundError: No module named 'misc'

Open reinforcement_learning/rl_cartpole_coach/rl_cartpole_coach_gymEnv.ipynb and run its first cell, focusing on the `common` path and the `from misc` import shown in the failure. Check how the notebook's referenced common files are laid out, then rerun the notebook's CI check; done means the import succeeds and CI passes.

Written by the indexing model from the issue text.