[conda] Need help: my Jupyter notebook does not work

[Han Fei]

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After I install R using conda install -c r r-essentials, my Jupyter
notebook shows the above error. Could anyone help me to solve this. Thanks,


The message shows:


Traceback (most recent call last):
File
"C:\Users\fhan\AppData\Local\Continuum\anaconda3\Scripts\jupyter-notebook-script.py",
line 6, in
from notebook.notebookapp import main
File
"C:\Users\fhan\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\__init__.py",
line 25, in
from .nbextensions import install_nbextension
File
"C:\Users\fhan\AppData\Local\Continuum\anaconda3\lib\site-packages\notebook\nbextensions.py",
line 27, in
from jupyter_core.utils import ensure_dir_exists
ImportError: cannot import name 'ensure_dir_exists'