I installed all packages and dependencies but when I try to run following command (bin/run ./manage.py check_setting)
I get an error of

. . .
from saml2.httpbase import HTTPBase
File “/Library/Python/2.7/site-packages/saml2/httpbase.py”, line 10, in

from six.moves.http_cookies import SimpleCookie

ImportError: No module named http_cookies

I also tried to re-install six dependency (sudo pip install six)

Requirement already satisfied: six in /System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python (1.4.1)

but still i get the same error with saying that “ImportError: No module named http_cookies

Development Environment:
macOS High Sierra v10.13.6
Redash v5.0.0
Redis v4.0.11
Python v2.7.11

I solved this issue with upgrading Python version to Python v2.7.15