hitting this issue and looks like latest update to markupsafe has removed soft_unicode, pinning markupsafe to 2.0.1 in requirements.txt fixes the issue
ImportError: cannot import name 'soft_unicode' from 'markupsafe' (/home/vasu/venv/lib/python3.8/site-packages/markupsafe/__init__.py)
aws/aws-sam-cli#3661
hitting this issue and looks like latest update to markupsafe has removed soft_unicode, pinning markupsafe to 2.0.1 in requirements.txt fixes the issue
aws/aws-sam-cli#3661