Pycharm error 'Process finished with exit code -1073740791 (0xC0000409)'

My purpose plot graph for methods (EKGDatas,AccelerometerDatas, PulseoksimeteDatas, PulseoksimeteDatas). In QtMainScreen.py, i wrote graphscreen method, because all pushbutton is ploted datas and i think a method is in enough. Am i right or am i write different methods in transleted code by pyqt5?

main.py

import sys

from PyQt5 import QtCore, QtGui, QtWidgets

from QtMainScreen import Ui_MainWindow



class Main(QtWidgets.QMainWindow, Ui_MainWindow):

    timedate = []
    timeclock = []
    dataadxl_x = []
    dataadxl_yw = []
    dataecg = []
    datathermo = []
    datapulse = []

    def __init__(self,parent=None):
        super(Main, self).__init__(parent)
        self.setupUi(self)
        self.pushButton_ekg.clicked.connect(self.EKGDatas)
        self.pushButton_accelerometer.clicked.connect(self.AccelerometerDatas)
        self.pushButton_airflow.clicked.connect(self.ThermocoupleDatas)
        self.pushButton_pulseoksimeter.clicked.connect(self.PulseoksimeteDatas)

    def GraphDatas(self):
        graph_data = open("DATA.TXT", "r").read()
        rowdata = graph_data.split('\n')
        global timedate
        global timeclock
        global dataadxl_x
        global dataadxl_yw
        global dataecg
        global datathermo
        global datapulse

        for line in rowdata:
            if len(line) > 1:

                timec,timed,dataadxlX,dataadxlYW,datae,datat= line.split(' ')
                timeclock.append(timec)
                timedate.append(timed)
                dataadxl_yw.append(dataadxlYW)
                dataadxl_x.append(dataadxlX)  
                dataecg.append(datae)
                datathermo.append(datat)





    def EKGDatas(self,parent=None):
        # super(Main, self).__init__(parent)
        self.graphScreen(self)



    def AccelerometerDatas(self):
         mydialog = QtWidgets.QDialog(self)
         mydialog.setModal(True)
         mydialog.exec()
         mydialog.show()


    def ThermocoupleDatas(self):
         mydialog = QtWidgets.QDialog(self)
         mydialog.setModal(True)
         mydialog.exec()
         mydialog.show()


    def PulseoksimeteDatas(self):
         mydialog = QtWidgets.QDialog(self)
         mydialog.setModal(True)
         mydialog.exec()
         mydialog.show()


if __name__== '__main__':
    App = QtWidgets.QApplication(sys.argv)
    PrecautionApp = Main()
    PrecautionApp.show()
    sys.exit(App.exec())

QtMainScreen.py

# Form implementation generated from reading ui file 'QtMainScreen.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!


from PyQt5 import QtCore, QtGui, QtWidgets
from QtGraphic import *

class Ui_MainWindow(object):

    def graphScreen(self):
        self.window = QtWidgets.QMainWindow()
        self.ui= Ui_MainWindowG()
        self.ui.setup(self.window)
        self.window.show()

    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(500, 440)
        MainWindow.setMaximumSize(QtCore.QSize(500, 440))
        icon = QtGui.QIcon()
        icon.addPixmap(QtGui.QPixmap("icon/icons8-hospital-bed-with-iv-machine-filled-30light.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        MainWindow.setWindowIcon(icon)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.gridLayoutWidget = QtWidgets.QWidget(self.centralwidget)
        self.gridLayoutWidget.setGeometry(QtCore.QRect(30, 30, 431, 331))
        self.gridLayoutWidget.setObjectName("gridLayoutWidget")
        self.gridLayout = QtWidgets.QGridLayout(self.gridLayoutWidget)
        self.gridLayout.setContentsMargins(0, 0, 0, 0)
        self.gridLayout.setObjectName("gridLayout")
        self.pushButton_airflow = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_airflow.setMinimumSize(QtCore.QSize(185, 140))
        font = QtGui.QFont()
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_airflow.setFont(font)
        self.pushButton_airflow.setAutoFillBackground(True)
        icon1 = QtGui.QIcon()
        icon1.addPixmap(QtGui.QPixmap("icon/nasal96.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_airflow.setIcon(icon1)
        self.pushButton_airflow.setIconSize(QtCore.QSize(100, 100))
        self.pushButton_airflow.setAutoDefault(False)
        self.pushButton_airflow.setDefault(False)
        self.pushButton_airflow.setFlat(False)
        self.pushButton_airflow.setObjectName("pushButton_airflow")
        self.gridLayout.addWidget(self.pushButton_airflow, 0, 2, 1, 1)
        self.pushButton_pulseoksimeter = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_pulseoksimeter.setMinimumSize(QtCore.QSize(185, 140))
        font = QtGui.QFont()
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_pulseoksimeter.setFont(font)
        self.pushButton_pulseoksimeter.setAutoFillBackground(True)
        icon2 = QtGui.QIcon()
        icon2.addPixmap(QtGui.QPixmap("icon/pulseoksimeter100.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_pulseoksimeter.setIcon(icon2)
        self.pushButton_pulseoksimeter.setIconSize(QtCore.QSize(100, 100))
        self.pushButton_pulseoksimeter.setAutoDefault(False)
        self.pushButton_pulseoksimeter.setDefault(False)
        self.pushButton_pulseoksimeter.setFlat(False)
        self.pushButton_pulseoksimeter.setObjectName("pushButton_pulseoksimeter")
        self.gridLayout.addWidget(self.pushButton_pulseoksimeter, 2, 0, 1, 1)
        self.pushButton_ekg = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_ekg.setMinimumSize(QtCore.QSize(185, 140))
        font = QtGui.QFont()
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_ekg.setFont(font)
        self.pushButton_ekg.setAutoFillBackground(True)
        icon3 = QtGui.QIcon()
        icon3.addPixmap(QtGui.QPixmap("icon/heartfilled96.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_ekg.setIcon(icon3)
        self.pushButton_ekg.setIconSize(QtCore.QSize(100, 100))
        self.pushButton_ekg.setAutoDefault(False)
        self.pushButton_ekg.setDefault(False)
        self.pushButton_ekg.setFlat(False)
        self.pushButton_ekg.setObjectName("pushButton_ekg")
        self.gridLayout.addWidget(self.pushButton_ekg, 0, 0, 1, 1)
        spacerItem = QtWidgets.QSpacerItem(10, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.gridLayout.addItem(spacerItem, 1, 0, 1, 1)
        spacerItem1 = QtWidgets.QSpacerItem(10, 10, QtWidgets.QSizePolicy.Minimum, QtWidgets.QSizePolicy.Expanding)
        self.gridLayout.addItem(spacerItem1, 1, 2, 1, 1)
        self.pushButton_accelerometer = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.pushButton_accelerometer.setMinimumSize(QtCore.QSize(185, 140))
        font = QtGui.QFont()
        font.setPointSize(12)
        font.setBold(True)
        font.setWeight(75)
        self.pushButton_accelerometer.setFont(font)
        self.pushButton_accelerometer.setAutoFillBackground(True)
        icon4 = QtGui.QIcon()
        icon4.addPixmap(QtGui.QPixmap("icon/position100.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
        self.pushButton_accelerometer.setIcon(icon4)
        self.pushButton_accelerometer.setIconSize(QtCore.QSize(100, 100))
        self.pushButton_accelerometer.setAutoDefault(False)
        self.pushButton_accelerometer.setDefault(False)
        self.pushButton_accelerometer.setFlat(False)
        self.pushButton_accelerometer.setObjectName("pushButton_accelerometer")
        self.gridLayout.addWidget(self.pushButton_accelerometer, 2, 2, 1, 1)
        spacerItem2 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        self.gridLayout.addItem(spacerItem2, 2, 1, 1, 1)
        spacerItem3 = QtWidgets.QSpacerItem(40, 20, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)
        self.gridLayout.addItem(spacerItem3, 0, 1, 1, 1)
        self.icon = QtWidgets.QPushButton(self.gridLayoutWidget)
        self.icon.setEnabled(True)
        self.icon.setMinimumSize(QtCore.QSize(35, 35))
        self.icon.setMaximumSize(QtCore.QSize(35, 35))
        self.icon.setText("")
        self.icon.setIcon(icon)
        self.icon.setIconSize(QtCore.QSize(30, 30))
        self.icon.setAutoDefault(False)
        self.icon.setDefault(False)
        self.icon.setFlat(True)
        self.icon.setObjectName("icon")
        self.gridLayout.addWidget(self.icon, 1, 1, 1, 1)
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 500, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        self.pushButton_ekg.clicked.connect(self.graphScreen)
        self.pushButton_airflow.clicked.connect(self.graphScreen)
        self.pushButton_pulseoksimeter.clicked.connect(self.graphScreen)
        self.pushButton_accelerometer.clicked.connect(self.graphScreen)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "Sleep Apnea"))
        self.pushButton_airflow.setText(_translate("MainWindow", "Airflow"))
        self.pushButton_pulseoksimeter.setText(_translate("MainWindow", "SpO2"))
        self.pushButton_ekg.setText(_translate("MainWindow", "EKG"))
        self.pushButton_accelerometer.setText(_translate("MainWindow", "Position"))


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

QtGraphic.py

# -*- coding: utf-8 -*-

# Form implementation generated from reading ui file 'QtGraphic.ui'
#
# Created by: PyQt5 UI code generator 5.11.3
#
# WARNING! All changes made in this file will be lost!

from PyQt5 import QtCore, QtGui, QtWidgets

class Ui_MainWindowG(object):
    def setup(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
        MainWindow.resize(500, 470)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.MatplotWidget = MatplotWidget(self.centralwidget)
        self.MatplotWidget.setGeometry(QtCore.QRect(10, 10, 470, 400))
        self.MatplotWidget.setMaximumSize(QtCore.QSize(500, 440))
        self.MatplotWidget.setObjectName("MatplotWidget")
        MainWindow.setCentralWidget(self.centralwidget)
        self.menubar = QtWidgets.QMenuBar(MainWindow)
        self.menubar.setGeometry(QtCore.QRect(0, 0, 500, 26))
        self.menubar.setObjectName("menubar")
        MainWindow.setMenuBar(self.menubar)
        self.statusbar = QtWidgets.QStatusBar(MainWindow)
        self.statusbar.setObjectName("statusbar")
        MainWindow.setStatusBar(self.statusbar)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))

from matplotwidget import MatplotWidget

if __name__ == "__main__":
    import sys
    app = QtWidgets.QApplication(sys.argv)
    MainWindow = QtWidgets.QMainWindow()
    ui = Ui_MainWindowG()
    ui.setup(MainWindow)
    MainWindow.show()
    sys.exit(app.exec_())

-------------------- matplotwidget.py --------------------

from PyQt5.QtWidgets import *


from matplotlib.backends.backend_qt5agg import FigureCanvasQTAgg as FigureCanvas

from matplotlib.figure import Figure


class MatplotWidget(QWidget):

    def __init__(self, parent=None):
        QWidget.__init__(self, parent)

        self.canvas = FigureCanvas(Figure())

        vertical_layout = QVBoxLayout()
        vertical_layout.addWidget(self.canvas)

        self.canvas.axes = self.canvas.figure.add_subplot(111)
        self.setLayout(vertical_layout)

When I use push button(EKG),pycharm say "Process finished with exit code -1073740791 (0xC0000409)"

When I run the QtMainScreen.py module, the graphical screen opens from the button I want. But I want to make the main.py transaction and run it with these changes. How can i fix for useful code? Thank you for your help..