PyQt5 end with exit code -1073740791

Today i get error: Process finished with exit code -1073740791 (0xC0000409)

When in my basic menu click button "Skrypty". Other things like changing tabs work. It's happend for me first time without pointed where i made mistake. I use pycharm 2020.1.2, and the PyQt5 with newest updates. Also things like icon's are shown

Here the code:

from PyQt5 import QtCore, QtGui, QtWidgets
from skrypty import Ui_skrypty


class Ui_menu(object):
    def openWindow(self):
        self.window = QtWidgets.QMainWindow()
        self.ui = Ui_skrypty()
        self.ui.setupUi(self.window)
        MainWindow.hide()
        self.window.show()

    def setupUi(self, menu):
        menu.setObjectName("menu")
        menu.resize(561, 644)
        self.centralwidget = QtWidgets.QWidget(menu)
        self.centralwidget.setObjectName("centralwidget")
        self.skryptyButton = QtWidgets.QPushButton(self.centralwidget)
        self.skryptyButton.setGeometry(QtCore.QRect(480, 0, 75, 23))
        self.skryptyButton.setObjectName("skryptyButton")
        self.skryptyButton.clicked.connect(self.openWindow)
        self.combo1 = QtWidgets.QTabWidget(self.centralwidget)
        self.combo1.setGeometry(QtCore.QRect(0, 20, 561, 631))
        palette = QtGui.QPalette()
        brush = QtGui.QBrush(QtGui.QColor(0, 0, 0))
        brush.setStyle(QtCore.Qt.SolidPattern)

        *SOME VISUAL PALLETES*

        self.combo1.setPalette(palette)
        self.combo1.setTabPosition(QtWidgets.QTabWidget.North)
        self.combo1.setTabShape(QtWidgets.QTabWidget.Triangular)
        self.combo1.setElideMode(QtCore.Qt.ElideNone)
        self.combo1.setDocumentMode(False)
        self.combo1.setTabsClosable(True)
        self.combo1.setMovable(True)
        self.combo1.setTabBarAutoHide(False)
        self.combo1.setObjectName("combo1")
        self.tab = QtWidgets.QWidget()
        self.tab.setObjectName("tab")
        self.comboBox = QtWidgets.QComboBox(self.tab)
        self.comboBox.setGeometry(QtCore.QRect(20, 50, 211, 31))
        self.comboBox.setObjectName("comboBox")
        self.widget = QtWidgets.QWidget(self.tab)
        self.widget.setGeometry(QtCore.QRect(250, 50, 31, 31))
        self.widget.setStyleSheet("image: url(:/prefixmenu/pencil.jpg);")
        self.widget.setObjectName("widget")
        self.combo1.addTab(self.tab, "")
        self.tab_2 = QtWidgets.QWidget()
        self.tab_2.setObjectName("tab_2")
        self.combo1.addTab(self.tab_2, "")
        menu.setCentralWidget(self.centralwidget)
        self.statusbar = QtWidgets.QStatusBar(menu)
        self.statusbar.setObjectName("statusbar")
        menu.setStatusBar(self.statusbar)

        self.retranslateUi(menu)
        self.combo1.setCurrentIndex(0)
        QtCore.QMetaObject.connectSlotsByName(menu)

    def retranslateUi(self, menu):
        _translate = QtCore.QCoreApplication.translate
        menu.setWindowTitle(_translate("menu", "Gear-Box"))
        self.skryptyButton.setText(_translate("menu", "Skrypty"))
        self.combo1.setTabText(self.combo1.indexOf(self.tab), _translate("menu", "Tab 1"))
        self.combo1.setTabText(self.combo1.indexOf(self.tab_2), _translate("menu", "Add project..."))

import menuicons    

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    menu = QtWidgets.QMainWindow()
    ui = Ui_menu()
        ui.setupUi(menu)
        menu.show()
        sys.exit(app.exec_())

In debugger and cmd shows :

Traceback (most recent call last):
  File "menu.py", line 16, in openWindow
    self.ui = Ui_skrypty()
NameError: name 'Ui_skrypty' is not defined