[python-pyqt5-sip4] sip-build:No module named 'pyqtbuild'

[Re-restart]

sip-build: Unable to import 'project.py': No module named 'pyqtbuild'

I can't find an answer. I have tried "yay -S pyqtbuild",reinstall pyqt5,sip and so on, but it's not effective