Intentando abrir un archivo jupyter notebook (archivo .ipynb) con este comandoipython notebook filename.ipynb entonces obtengo un error inferior al usar ipython ..

Traceback (most recent call last):
File "c:\python\lib\runpy.py", line 193, in _run_module_as_main
"__main__", mod_spec)
File "c:\python\lib\runpy.py", line 85, in _run_code
exec(code, run_globals)
File "C:\Python\Scripts\ipython.exe\__main__.py", line 5, in <module>
File "c:\python\lib\site-packages\IPython\__init__.py", line 55, in <module>
from .terminal.embed import embed
File "c:\python\lib\site-packages\IPython\terminal\embed.py", line 16, in 
<module>
from IPython.terminal.interactiveshell import TerminalInteractiveShell
File "c:\python\lib\site-packages\IPython\terminal\interactiveshell.py", 
line 18, in <module>
from prompt_toolkit.enums import DEFAULT_BUFFER, EditingMode
ModuleNotFoundError: No module named 'prompt_toolkit'