Tutor in development, error 1 import imp

Did you follow the instructions on how to prepare the edx-platform repo for mounting? Open edX development — Tutor documentation

In particular: Configuration and customisation — Tutor documentation

Given that you have from py2neo import NodeMatcher on line 21 of “edx-platform/openedx/core/djangoapps/coursegraph/tasks.py”, my guess is that you did not create your fork on top of the lilac.2 tag, but on top of master: