When I open a project there's nothing there

[the2h]

Hello, kind of new to Unity and finally figured out how to get the 2019 versions. I’m trying to open Sebastian Lague’s solar system project (link here: GitHub - SebLague/Solar-System: Simple solar system experiment ) but there’s nothing there.

Help?

[Valjuin]

[sgyyprymwb]

I dont have even the tabs like wtf i am even dont have lines and the screen is purple

[sgyyprymwb]

Someone can halp me?