requirements.txt inspector not working with private repo

I'm getting a "Package not found: '...' "  in the requirements.txt.  The package exists on a private repo which I have configure in PyCharm

I have configured the interpreter for the project and added my private repo using "Manage Repositories" (Project:xxx -> Project Interperter -> + Manage Repositories -> + . I have also added a pip.ini file into the venv folder of the project in an effort to resolve this issue.  I've tried Invalidate Caches... 

I can see the package in the Python Packages repo

When I run pip install -r requirements.txt in the terminal all the packages install, including the "Package not found". 

PyCharm 2021.23.3 (Professional Edition) running on a Windows machine

Can anyone help me to fix this issue ? Thanks