Error when creating a Universal 3D Project

(Exact Unity Version: 2021.3.13f1)

So I tried to create a new project using the Universal 3D template, not the sample scene one, just when the Unity Editor finished loading, a Unity Package Manager error popped up. I did upgrade the Universal 3D template before creating the project, but I don’t know if that was the reason this happened. Could anyone please help me with this?

Use the latest 2021 version (or if you’re starting a new project anyways, just use Unity 6 to get updates and the latest features and fixes)