'"...\MyEnv\Scripts\jupyter-nbextension.exe"' is not recognized as an internal or external command, operable program or batch file.

[amole-arup]

I tried to create an environment using conda env create -f file.yml, containing python 3.10 and jupyter, nbconvert and ipympl using conda-forge channel. It completed "transaction preparation" and "verification" and was carrying out the "transaction execution" when it failed with the following error: "C:\Users\user.name\AppData\Local\miniforge3\envs\MyEnv\Scripts\jupyter-nbextension.exe" is not recognized as an internal or external command, operable program or batch file.

Any idea why this should be the case and what we can do to fix it?

The full error is as follows:

(base) C:\Users\user.name>conda env create -f "YAML-files\MyEnv.yml"
Retrieving notices: ...working... done
Collecting package metadata (repodata.json): done
Solving environment: done


==> WARNING: A newer version of conda exists. <==
  current version: 23.3.1
  latest version: 24.3.0

Please update conda by running

    $ conda update -n base -c conda-forge conda

Or to minimize the number of packages updated during conda update use

     conda install conda=24.3.0



Downloading and Extracting Packages

Preparing transaction: done
Verifying transaction: done
Executing transaction: | '"C:\Users\user.name\AppData\Local\miniforge3\envs\MyEnv\Scripts\jupyter-nbextension.exe"' is not recognized as an internal or external command,
operable program or batch file.

done
ERROR conda.core.link:_execute(740): An error occurred while installing package 'conda-forge::widgetsnbextension-3.5.2-py310h5588dad_1'.
Rolling back transaction: done

LinkError: post-link script failed for package conda-forge::widgetsnbextension-3.5.2-py310h5588dad_1
location of failed script: C:\Users\user.name\AppData\Local\miniforge3\envs\MyEnv\Scripts\.widgetsnbextension-post-link.bat
==> script messages <==
'"C:\Users\user.name\AppData\Local\miniforge3\envs\MyEnv2\Scripts\jupyter-nbextension.exe"' is not recognized as an internal or external command,
operable program or batch file.

==> script output <==
stdout:
stderr:
return code: 1

()


(base) C:\Users\user.name>conda activate MyEnv

(MyEnv) C:\Users\user.name>conda list
# packages in environment at C:\Users\user.name\AppData\Local\miniforge3\envs\MyEnv:
#
# Name                    Version                   Build  Channel

(MyEnv) C:\Users\user.name>