python - pyqt5.qtcore and pyqt4.qtcore modules both wrap the qobject class

Question

I developed a GUI application using qtcreator and converted to python script using pyuic5.

pyuic5 -x app.ui -o app.py

Then I imported the main ui as

from app import Ui_Rplatform as rp

Then I got error on the import line

from app import Ui_Rplatform as rp

as

pyqt5.qtcore and pyqt4.qtcore modules both wrap the qobject class

What could be the issue?