xlsx 转 PDF 报错： File "<COMObject <unknown>>", line 3, in ExportAsFixedFormat ?

[ituserxxx]

my project dir

• m1.xlsx
• main.py

this main.py code

import poexcel
if __name__ == '__main__':
    poexcel.excel2pdf(excel_path=r".\m1.xlsx",pdf_path=r".\test.pdf")

exec result

files amount:1
files amount:1
Traceback (most recent call last):
  File "C:\Users\xxx\python_project\xlsx2pdf\main.py", line 6, in <module>
    poexcel.excel2pdf(
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\poexcel\api\excel.py", line 58, in excel2pdf
    mainExcel.excel2pdf(excel_path, pdf_path, sheet_id)
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\poexcel\core\ExcelType.py", line 162, in excel2pdf
    sheet.to_pdf(path=pdf_path_name, show=False)
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\xlwings\main.py", line 1569, in to_pdf
    return self.book.to_pdf(
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\xlwings\main.py", line 1275, in to_pdf
    return utils.to_pdf(
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\xlwings\utils.py", line 662, in to_pdf
    obj.impl.to_pdf(os.path.realpath(report_path), quality=quality)
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\xlwings\_xlwindows.py", line 920, in to_pdf
    self.xl.ExportAsFixedFormat(
  File "C:\Users\xxx\python_project\xlsx2pdf\venv\lib\site-packages\xlwings\_xlwindows.py", line 122, in __call__
    v = self.__method(*args, **kwargs)
  File "<COMObject <unknown>>", line 3, in ExportAsFixedFormat