alphageometry i can't find transformer.py

I run **AlphaGeometry** then
_Traceback (most recent call last):
File "C:/Users/Dell/Desktop/huu/python/python 3.10/AlphaGeometry.py", line 28, in
import lm_inference as lm
File "C:\Users/Dell/Desktop/huu/python/python 3.10\lm_inference.py", line 20, in
import models # pylint: disable=unused-import
File "C:\Users/Dell/Desktop/huu/python/python 3.10\models.py", line 20, in
import decoder_stack
File "C:\Users/Dell/Desktop/huu/python/python 3.10\decoder_stack.py", line 21, in
from transformer import decoder_stack
ModuleNotFoundError: No module named 'transformer'_
Where is **transformer.py**