Problem about importing ursina

from ursina import *

This code worked about 3 hours ago…
but now, it doesn’t work.
I turn off and on the computer and it causes error
error said:

Traceback (most recent call last):
File “D:\Users\ohver\Desktop\python\errorrrrrrr.py”, line 1, in
from ursina import *
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina_init_.py”, line 30, in
from ursina.boxcast import boxcast
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina\boxcast.py”, line 8, in
_boxcast_box = Entity(model=‘cube’, origin_z=-.5, collider=‘box’, color=color.white33, enabled=False, eternal=True, add_to_scene_entities=False)
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina\ursinastuff.py”, line 230, in call
obj = type.call(cls, *args, **kwargs)
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina\entity.py”, line 107, in init
setattr(self, key, kwargs[key])
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina\entity.py”, line 198, in model_setter
m = load_model(value, application.asset_folder)
File “C:\Users\ohver\AppData\Local\Programs\Python\Python312\Lib\site-packages\ursina\mesh_importer.py”, line 55, in load_model
return builtins.loader.loadModel(filename) # type: ignore
AttributeError: module ‘builtins’ has no attribute ‘loader’

I don’t changed code, but after I turned my computer off and on,it causes error
I’ve done everything I can. I’ve reinstalled, I’ve done pip updates, ursina updates, panda3d updates, but they’re very consistent. Is there a virus all of a sudden?
What’s more interesting is that it works well with Python Shell(sometimes).
At first time, in Python Shell, the code works well. but in IDLE editor, there is error.
after the IDLE editor cause error, Python Shell causes error,too.

oh, I solve this problem. after I reinstall python, it works well.