How to execute and build the pyqt6 branch in Windows 10

[JeongJun-Lee]

I checked out the pyqt6 branch to execute and build it on Windows 10. When I tried to execute it in virtualenv which is based on python 3.9, it spits out the error below. How can I solve it?

(py39) C:\dev\mu>python run.

'''Traceback (most recent call last):
File "C:\dev\mu\run.py", line 2, in
from mu.app import run
File "C:\dev\mu\mu\app.py", line 34, in
from PyQt6.QtCore import (
ImportError: DLL load failed while importing QtCore: The specified procedure could not be found.'''