i am creating an interface using PyQt5 but the script stops with an exit code -1073740791 (0xC0000409)

My project for recognizing words typed in a printed prescription and finding out the pills available in the store and show it to the user. I am using PyQt5 for this and the scripts end without an error - "Process finished with exit code -1073740791 (0xC0000409)" . I dont have an idea on what is the problem. please help me.

import cv2
import sys
import time
from PyQt5 import QtCore
from PyQt5.QtCore import pyqtSlot
from PyQt5.QtWidgets import QApplication,QMainWindow , QMessageBox
from PyQt5.QtGui import QImage, QPixmap
from PyQt5.uic import loadUi
import os
from PIL import Image
import pytesseract
import pandas as pd


class dispensercode(QMainWindow):
    def __init__(self):
        self.name = 'delila'
        super(dispensercode, self).__init__()

        loadUi('gui1.ui',self)
        self.logic = 0
        self.capdone = 0
        self.count = 1
        self.x = 'm'
        self.Confirm.clicked.connect(self.Confirmed)
        self.Camon.clicked.connect(self.Camturn)
        self.Capture.clicked.connect(self.captureClicked)
       



    @pyqtSlot()

    def Confirmed(self):
        name = self.NameInput.toPlainText()
        self.new_name = name
        self.label2.setText('Patient name is ' + name)
        return self.new_name

    def Camturn(self):
        cap = cv2.VideoCapture(0)

        while (cap.isOpened()):

            ret, frame = cap.read()
            if ret == True:  # ret is if cam is working
                print('here')
                self.displayimage(frame, 1)  # frame is the image
                cv2.waitKey()

                if (self.logic == 2):

                    cv2.imwrite('%s.png' % (self.new_name), frame)  # %s will be substituted by %(self.value)


                    self.capdone = 1
                    print('cap done is ', self.capdone)
                    # self.textBrowser1.setText('image saved pres cap for another image')
                    cap.release()
                    cv2.destroyAllWindows()

                    if (self.capdone == 1):
                        self.loadClicked()
                        self.ocr()
                        self.capdone = 0
#-------------------create verification pop up window-----------------------------------#
                        msg = QMessageBox()
                        msg.setWindowTitle('please verify whether the ocr is correct')
                        msg.setText(' Click "Accept" if true "Reject" if false')
                        msg.setIcon(QMessageBox.Question)
                        msg.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
                        msg.setInformativeText(self.text)
                        msg.buttonClicked.connect(self.popup_button)
                        x = msg.exec_()

                        print('this is before while is running')
                        if self.ver() == False:
                            print('this while is running')
                            if self.count <= 3:
                                self.count = self.count + 1
                                cap = cv2.VideoCapture(0)

                                while (cap.isOpened()):

                                    ret, frame = cap.read()
                                    if ret == True:  # ret is if cam is working
                                        print('here')
                                        self.displayimage(frame, 1)  # frame is the image
                                        cv2.waitKey()

                                        if (self.logic == 2):

                                            cv2.imwrite('%s.png' % (self.new_name),
                                                        frame)  # %s will be substituted by %(self.value)

                                            self.capdone = 1
                                            print('cap done is ', self.capdone)
                                            # self.textBrowser1.setText('image saved pres cap for another image')
                                            cap.release()
                                            cv2.destroyAllWindows()

                                            if (self.capdone == 1):
                                                self.loadClicked()
                                                self.ocr()
                                                self.capdone = 0
                                                # -------------------create verification pop up window-----------------------------------#
                                                msg = QMessageBox()
                                                msg.setWindowTitle('please verify whether the ocr is correct')
                                                msg.setText(' Click "Accept" if true "Reject" if false')
                                                msg.setIcon(QMessageBox.Question)
                                                msg.setStandardButtons(QMessageBox.Yes | QMessageBox.No)
                                                msg.setInformativeText(self.text)
                                                msg.buttonClicked.connect(self.popup_button)
                                                x = msg.exec_()



                            elif self.count > 3:
                                self.label4.setText(
                                    'please type the correct words and save the file and close the txt file and press spacebar')

                                os.startfile('{}.txt'.format(self.new_name))
                                break
                        else :
                            print('readlist is running')
                            self.readlist()

                    self.logic = 1
                else:
                    print('return not found')


    def captureClicked(self):
        self.logic = 2

    def displayimage(self, img, window=1):
        qformat = QImage.Format_Indexed8

        if len(img.shape) == 3:
            if (img.shape[2]) == 4:
                qformat = QImage.Format_RGBA8888

            else:
                qformat = QImage.Format_RGB888
        img = QImage(img, img.shape[1], img.shape[0], qformat)  # Qimage is used to load the image
        img = img.rgbSwapped()
        self.label1.setPixmap(QPixmap.fromImage(img))  # QPixmap is used to show the image
        self.label1.setScaledContents(True)  # scale the image according th the frame
        self.label1.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)

    def loadClicked(self):
        img1 = cv2.imread("{}.png".format(self.new_name))
        self.displayimagef(img1, 1)
        cv2.destroyAllWindows()

    def displayimagef(self, img1, window=1):
        qformat = QImage.Format_Indexed8

        if len(img1.shape) == 3:
            if (img1.shape[2]) == 4:
                qformat = QImage.Format_RGBA8888

            else:
                qformat = QImage.Format_RGB888
        img1 = QImage(img1, img1.shape[1], img1.shape[0], qformat)  # Qimage is used to load the image
        img1 = img1.rgbSwapped()
        self.label1.setPixmap(QPixmap.fromImage(img1))  # QPixmap is used to show the image
        self.label1.setScaledContents(True)  # scale the image according th the frame
        self.label1.setAlignment(QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)

    def ocr(self):
        # load the example image and convert it to grayscale
        image = cv2.imread("{}.png".format(self.new_name))
        gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

        # write the grayscale image to disk as a temporary file so we can
        # apply OCR to it
        filename = "{}.png".format(os.getpid())
        cv2.imwrite(filename, gray)

        # load the image as a PIL/Pillow image, apply OCR, and then delete
        # the temporary file
        self.text = pytesseract.image_to_string(Image.open(filename))
        os.remove(filename)
        self.label3.setText(self.text)
        print('converted to text')

        # export to .txt file
        # stdoutOrigin = sys.stdout
        with open("{}.txt".format(self.new_name), "w") as f:
            f.write(self.text)

    def popup_button(self, i):
        print(i.text())

        if i.text() == '&Yes':
            self.ver = True
            print(self.ver)
            return self.ver

        else:
            self.ver = False
            print(self.ver)
            return self.ver



    def readlist(self):
        with open("{}.txt".format(self.new_name)) as f1:
            os.startfile('{}.txt'.format(self.new_name))
            flat_list = [word for line in f1 for word in line.split()]
            print(flat_list)

        # ---------read the csv file of pills-------------------------------------------#
        df = pd.read_excel('items.xlsx', sheet_name=0)  # can also index sheet by name or fetch all sheets
        bin_no = df['BIN no'].tolist()
        Name = df['Name'].tolist()
        content = df['content'].tolist()

        print(bin_no)
        print(Name)
        print(content)

        # iterating through the list
        final_list = []
        i = 0
        for i in range(len(flat_list)):
            for j in range(len(Name)):
                if Name[j] == flat_list[i]:
                    if content[j] == flat_list[i + 1]:
                        final_list.append(bin_no[j])
                        final_list.append(Name[j])
                        final_list.append(content[j])
                        x = i
                        for k in range(x, len(flat_list)):
                            if 'Supply' == flat_list[k]:
                                print(flat_list[k + 1])
                                final_list.append(flat_list[k + 1])

                            else:
                                continue

                    else:
                        continue
                else:
                    continue

app =QApplication(sys.argv)
window = dispensercode()
window.show()
try:
    sys.exit(app.exec_())
except:
    print('exiting')

In here the main error that is shown is "Process finished with exit code -1073740791 (0xC0000409)"