AttributeError: module 'pcluster.cli' has no attribute 'main'

[iccoleman]

Hi, I'm not sure if it's appropriate to open an issue for a sample project but I did run into an issue.
I cloned the repo and ran the sample app, heres my environment information:

% pip freeze | grep aws-parallelcluster 
aws-parallelcluster==3.2.0

% python --version 
Python 3.7.13

However, upon processing a request the app throws an error.

[ERROR] AttributeError: module 'pcluster.cli' has no attribute 'main'
Traceback (most recent call last):
  File "/var/task/function.py", line 62, in lambda_handler
    cli.main()

Any help that could be provided would be greatly appreciated, thanks!