Here is the code that I wrote.
from ursina import *
from ursina.prefabs.first_person_controller import FirstPersonController
app = Ursina()
player = FirstPersonController()
app.run()
It is not a lot, but for some reason the window does not show up properly:
EDIT:
I use python -v 3.10 and ursina -v 4.1.1
My operating system is windows 10
EDIT 2:
It doesn't work on python -v 3.7 either