Ошибка в QT Пж хелп срочно

Вылезла ошибка версию переусановил на всеравно не работает;

qt.qpa.plugin: Could not find the Qt platform plugin "windows" in "" This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

import sys
from PyQt5 import QtCore, QtGui, QtWidgets
from test import Ui_Dialog

#Create app
app = QtWidgets.QApplication(sys.argv)

#init
Dialog = QtWidgets.QDialog()
ui = Ui_Dialog()
ui.setupUi(Dialog)
Dialog.show()

#Main Loop
sys.exit(app.exec_())