python3 -m pip install --upgrade google-assistant-sdk[samples] giving failed with error code 1 in None

[MoWizard]

Hey,
I put in:

python3 -m pip install --upgrade google-assistant-sdk[samples]

and gives me the error:

ERROR: Command "/home/pi/env/bin/python3 /home/pi/env/lib/python3.6/site-packages/pip install --ignore-installed --no-user --prefix /tmp/pip-build-env-0ww8hhyt/overlay --no-warn-script-location --no-binary :none: --only-binary :none: -i https://pypi.org/simple --extra-index-url https://www.piwheels.org/simple -- 'setuptools>=40.6.0' wheel 'cffi>=1.8,!=1.11.3; python_implementation != '"'"'PyPy'"'"''" failed with error code 1 in None

I have used the code python3 -m venv env already in case you were wondering.
Any solutions?

Full Error Code:

[MoWizard]

Fixed it,

pip uninstall -y enum34

solved it for me (Help from https://stackoverflow.com/questions/43124775/why-python-3-6-1-throws-attributeerror-module-enum-has-no-attribute-intflag)