[Python] It runs, but 0xc0000409 error occurs during operation

I'm practicing a program that reads and displays Excel files Try raising the entire code. I'm using Python 3.9, Pycharm, PyQt5 - 5.15.7

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QTableWidget, QTableWidgetItem, QHeaderView, QHBoxLayout, QVBoxLayout, QPushButton
from PyQt5.QtCore import Qt
import pandas as pd
from pympler import muppy
all_objects = muppy.get_objects()

class MyApp(QWidget):
def __init__(self):
super().__init__()
self.window_width, self.window_height = 700, 500
self.resize(self.window_width, self.window_height)

layout = QVBoxLayout()
self.setLayout(layout)

self.table = QTableWidget()
layout.addWidget(self.table)

self.button = QPushButton('&load Data')
self.button.clicked.connect(lambda _, xl_path=excel_file_patch, sheet_name=worksheet_name: self.loadExcelData(xl_path, sheet_name))
layout.addWidget(self.button)

def loadExcelData(self, excel_file_dir, worksheet_name):
df = pd.read_excel(excel_file_dir, worksheet_name)
if df.size == 0:
return super.loadExcelData(excel_file_dir, worksheet_name)

df.fillna('', inplace=True)
self.table.setRowCount(df.shape[0])
self.table.setColumnCount(df.shape[0])
self.table.setHorizontalHeaderLabels(df.columns)

if __name__ == '__main__':

excel_file_patch = 'data.xlsx'
worksheet_name = 'Sales'

app = QApplication(sys.argv)
myApp = MyApp()
myApp.show()

try:
sys.exit(app.exec())
except SystemExit:
print('closing Window...')

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