pyqt desktop simulator icons won't display properly

[marsh bloom]

the screenshot will go much further in explaining what I mean

that little weird box on the upper left....that's supposed to be the icon for the browser

import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtGui import QPixmap, QIcon
from PyQt5.QtWidgets import QApplication, QMainWindow, QWidget, QVBoxLayout, QPushButton, QLabel
from PyQt5.QtWebEngineWidgets import QWebEngineView

class DesktopSimulatorApplication(QApplication):
    def __init__(self, sys_argv):
        super(DesktopSimulatorApplication, self).__init__(sys_argv)
        self.desktop_simulator_window = DesktopSimulatorWindow()
        self.desktop_simulator_window.show()

class DesktopSimulatorWindow(QMainWindow):
    def __init__(self):
        super(DesktopSimulatorWindow, self).__init__()

        self.setWindowTitle("Desktop Simulator")
        self.setGeometry(100, 100, 800, 600)

        # Create a central widget to hold the desktop simulator components
        central_widget = QWidget(self)
        self.setCentralWidget(central_widget)