python script failing to run via Jenkins (windows system), Bid <=15 or will not be accepted

I am trying to run a python script via Jenkins, by checking out a git repo, and then in "Execute Windows batch command" of jenkins 1.) set path to python installation 2.) creating and activating a virtual env 3.) installing packages from requirements txt file 4.) Run the script I am getting an error: "ModuleNotFoundError: No module named 'numpy'