Github Pages Not Working

Hello,

I am trying to create a user Github Pages website, but when I try to access it, it throws a 404 error.

I can still access the HATS184.github.io repositery. When I look at the Github Pages file in Settings, it says it is building it. The index.html file was last updated on Dec 2019, so somthing is wrong.

I just added a README, no help.

Please help me?

Thanks