pyinstaller error "Zipfile.BadZipFile " when using openpyxl, pandas

Question

I'm making a program using pyqt5, openpyxl, pandas.

It's a program that brings only the necessary data of Excel files when I push "Save" button. It works well on my computer.

After converting it into an .exe file through pyinstaller, however, errors appear as shown in the picture below.

I hope to know the reason and solution. Thank you in adavance for the help

The code after line 143 is as follows.

def save_buttonClicked(self):
        
    desktop = self.desktop_textbox.text()
    dataweb = self.dataweb_textbox.text()
    prt = self.PRT_textbox.text()
    rft = self.RFT_textbox.text()
    tf  = self.TF_textbox.text()

    data1 = pd.read_excel(dataweb, engine= 'openpyxl')
    data2 = pd.read_csv(prt, encoding='euc-kr')
    data3 = pd.read_csv(rft, encoding='euc-kr')
    data4 = pd.read_csv(tf, encoding='euc-kr')

. . .

result = pd.concat([data1, df2, df3, df4], axis=1)

    result.to_excel(desktop+'/R-EPS.xlsx', sheet_name='R-EPS', index=False, header=True)

    wb = openpyxl.load_workbook(filename=desktop+'/R-EPS.xlsx')
    ws = wb.active
    ws = wb['R-EPS']

. . .

wb.save(desktop+'/R-EPS.xlsx')

    excel = win32.gencache.EnsureDispatch('Excel.Application')
    load_wb = excel.Workbooks.Open(desktop+'/R-EPS.xlsx')

    sheet_list = []
    for sh in load_wb.Sheets:
        ws = load_wb.Worksheets(sh.Name)
        ws.Columns.AutoFit()
        ws.Rows.AutoFit()

    load_wb.Save()
    excel.Application.Quit()

    self.closeEvent(QCloseEvent)