You are trying to run a fork of master, this will not work without further adjustments to your Tutor environment.
Please take a look here for the “proper” way of running a fork: Configuration and customisation — Tutor documentation
You should start by creating a new branch from the open-release/maple.3, eg. Harshgaur14-dev, and set EDX_PLATFORM_VERSION to Harshgaur14-dev.
Check this thread for further steps: Running an edx-platform fork from a local repository - #2 by uetuluk