Jupyter_contrib_nbextensions: Installation Part 2 yields: [JupyterContribApp] CRITICAL | Bad config encountered during initialization: [JupyterContribApp] CRITICAL | Unrecognized flag: '--user'

[joshjacobson]

jupyter contrib nbextensions install --user
Returns:

[JupyterContribApp] CRITICAL | Bad config encountered during initialization:
[JupyterContribApp] CRITICAL | Unrecognized flag: '--user'

This also happens with --system.

ext_require_path = 'usability/codefolding/main'
try:  # notebook >= 4.2.0
    from notebook.nbextensions import enable_nbextension
    enable_nbextension('notebook', ext_require_path)
except ImportError:
    from notebook.nbextensions import EnableNBExtensionApp    
    EnableNBExtensionApp().enable_nbextension(ext_require_path)

from notebook.nbextensions import check_nbextension
check_nbextension('usability/codefolding')
check_nbextension('usability/codefolding/main.js')

Returns 'False'.

[juhasch]

Sorry, this is a typo in the documentation. There is a 's' too much:

jupyter contrib nbextension install --user

Will be fixed shortly.

[jcb91]

@juhasch good spot. Perhaps it would be worth making an alias with the s added as well...

[juhasch]

I guess this would be a good idea.

[ZhigangQi]

Sorry, this is a typo in the documentation. There is a 's' too much:

jupyter contrib nbextension install --user

Will be fixed shortly.

emm,Did the bug fix?I tried the command
jupyter contrib nbextension install --userand also triedjupyter contrib nbextensions install --user
They are not work at all.I spent one day to feature it out ,but I still haven't solved it .Do you guys have any ideas ?
Thanks for your help .

[ZhigangQi]

I have figured it out .I read your documentation carefully .I found the problem .it was because I installed the jupyter_contrib_nbextensions ,but the nbextensions didn't exist in my jupyter --data-dir.
I copy the nbextensions folder to jupyter --data-dir,and then run the command jupyter contrib nbextensions install --user.It works .
Hope It will help the guys with same problem .

[philohistoria]

I encountered the exact same issue and my solution is:

jupyter-contrib-nbextension install --sys-prefix

[florianblume]

For me, I had to install nbextensions using pip. Installing it via conda did not put it in the jupyter --data-dir (thanks to @ZhigangQi I checked that folder).