Python openCv Pyqt5 [closed]

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Hi I am Developing a Project with Python Opencv Pyqt. An application that starts the camera recognition that starts and stops the camera. But I can't turn on the camera in Qlabelin Codes This way I wonder how I can fix this error.

       import cv2
      import sys

     from PyQt5.QtCore import QTimer
     from PyQt5.QtGui import QImage, QPixmap
     from PyQt5.QtWidgets import QApplication, QDialog
     from PyQt5 import QtCore, QtGui, QtWidgets


    class Ui_Yuztanima(object):


def setupUi(self, Yuztanima):

    Yuztanima.setObjectName("Yuztanima")
    Yuztanima.setWindowModality(QtCore.Qt.NonModal)
    Yuztanima.resize(1098, 896)
    icon = QtGui.QIcon()
    icon.addPixmap(QtGui.QPixmap("Giris/Flag_of.png"), QtGui.QIcon.Normal,
                   QtGui.QIcon.Off)
    Yuztanima.setWindowIcon(icon)
    self.centralwidget = QtWidgets.QWidget(Yuztanima)
    self.centralwidget.setObjectName("centralwidget")
    self.imgLabel = QtWidgets.QLabel(self.centralwidget)
    self.imgLabel.setGeometry(QtCore.QRect(240, 80, 640, 480))
    self.imgLabel.setFrameShape(QtWidgets.QFrame.Box)
    self.imgLabel.setText("")
    self.imgLabel.setObjectName("imgLabel")
    self.horizontalLayoutWidget = QtWidgets.QWidget(self.centralwidget)
    self.horizontalLayoutWidget.setGeometry(QtCore.QRect(10, 700, 1081, 151))
    self.horizontalLayoutWidget.setObjectName("horizontalLayoutWidget")
    self.Menuduzen_2 = QtWidgets.QHBoxLayout(self.horizontalLayoutWidget)
    self.Menuduzen_2.setContentsMargins(0, 0, 0, 0)
    self.Menuduzen_2.setObjectName("Menuduzen_2")
    self.startButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
    icon1 = QtGui.QIcon()
    icon1.addPixmap(QtGui.QPixmap("../../Desktop/camera-play-699330.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
    self.startButton.setIcon(icon1)
    self.startButton.setIconSize(QtCore.QSize(100, 100))
    self.startButton.setObjectName("startButton")
    self.startButton.clicked.connect(self.start_webcam)
    self.Menuduzen_2.addWidget(self.startButton)
    self.stopButton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
    icon2 = QtGui.QIcon()
    icon2.addPixmap(QtGui.QPixmap("../../Desktop/stop_song_red-512.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
    self.stopButton.setIcon(icon2)
    self.stopButton.setIconSize(QtCore.QSize(100, 100))
    self.stopButton.setObjectName("stopButton")
    self.stopButton.clicked.connect(self.stop_webcam)
    self.Menuduzen_2.addWidget(self.stopButton)
    self.yuztanimabaslatbutton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
    icon3 = QtGui.QIcon()
    icon3.addPixmap(QtGui.QPixmap("Turkce/YuzTanima.png"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
    self.yuztanimabaslatbutton.setIcon(icon3)
    self.yuztanimabaslatbutton.setIconSize(QtCore.QSize(100, 100))
    self.yuztanimabaslatbutton.setObjectName("yuztanimabaslatbutton")
    self.Menuduzen_2.addWidget(self.yuztanimabaslatbutton)
    self.cikisbutton = QtWidgets.QPushButton(self.horizontalLayoutWidget)
    icon4 = QtGui.QIcon()
    icon4.addPixmap(QtGui.QPixmap("Giris/erase_delete_remove_wipe_out-512.png"), QtGui.QIcon.Normal,
                    QtGui.QIcon.Off)
    self.cikisbutton.setIcon(icon4)
    self.cikisbutton.setIconSize(QtCore.QSize(100, 100))
    self.cikisbutton.setObjectName("cikisbutton")
    self.Menuduzen_2.addWidget(self.cikisbutton)
    Yuztanima.setCentralWidget(self.centralwidget)
    self.menubar = QtWidgets.QMenuBar(Yuztanima)
    self.menubar.setGeometry(QtCore.QRect(0, 0, 1098, 26))
    self.menubar.setObjectName("menubar")
    Yuztanima.setMenuBar(self.menubar)
    self.statusbar = QtWidgets.QStatusBar(Yuztanima)
    self.statusbar.setObjectName("statusbar")
    Yuztanima.setStatusBar(self.statusbar)

    self.retranslateUi(Yuztanima)
    self.cikisbutton.clicked.connect(Yuztanima.close)
    QtCore.QMetaObject.connectSlotsByName(Yuztanima)
    self.image = None

def retranslateUi(self, Yuztanima):
    _translate = QtCore.QCoreApplication.translate
    Yuztanima.setWindowTitle(_translate("Yuztanima", "Yuz Tanıma Yazılımı"))
    self.startButton.setText(_translate("Yuztanima", "Kamerayı Başlat"))
    self.stopButton.setText(_translate("Yuztanima", "Kamerayı Durdur"))
    self.yuztanimabaslatbutton.setText(_translate("Yuztanima", "Yuz Tanımayı Başlat"))
    self.cikisbutton.setText(_translate("Yuztanima", "Çıkış"))

def start_webcam(self):

    self.capture = cv2.VideoCapture(0)
    self.capture.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
    self.capture.set(cv2.CAP_PROP_FRAME_WIDTH, 640)

    self.timer = QTimer(self)
    self.timer.timeout.connect(self.update_frame)
    self.timer.start(5)

def update_frame(self):

    ret, self.image ...