404 errors trying to access API

[grallewellyn]

Hi, thank you for creating this open source package! https://pypi.org/project/jupyterlab-notifications/ lists a different git repository also called jupyterlab-notifications (https://github.com/mwakaba2/jupyterlab-notifications), so I installed your package with pip install git+https://github.com/jupytercalpoly/jupyterlab-notifications.git
However, when I try to run jupyterlab, I get the following console errors:

I also get 404 errors when posting the notification when I replicate the way the jupyterlab-notifications code posts a notification. Do you have any recommendations for this problem?