ERROR: Could not process .\with-meta-file.ipynb | ValueError: embedded null byte

[theWorldofYu]

when i run pelican content --debug, the information show as follow:

ERROR: Could not process .\with-meta-file.ipynb
  | ValueError: embedded null byte
  |___
  | Traceback (most recent call last):
  |   File "d:\venv\blogenv\lib\site-packages\pelican\generators.py", line 523,
in generate_context
  |     context_sender=self)
  |   File "d:\venv\blogenv\lib\site-packages\pelican\readers.py", line 526, in
read_file
  |     content, reader_metadata = reader.read(path)
  |   File "D:\blog\plugins\ipynb\markup.py", line 81, in read
  |     content, info = get_html_from_filepath(filepath)
  |   File "D:\blog\plugins\ipynb\core.py", line 91, in get_html_from_filepath
  |     content, info = exporter.from_filename(filepath)
  |   File "d:\venv\blogenv\lib\site-packages\nbconvert\exporters\exporter.py",
line 171, in from_filename
  |     resources['metadata']['modified_date'] = modified_date.strftime(text.dat
e_format)
  | ValueError: embedded null byte