Error using jupyter_nbextensions_configurator with nbclassic

[scmmmh]

I'm trying to use nbclassic (0.4.2.) with the jupyter_nbextensions_configurator using the notebook_shim and getting the following error:

[I 2022-07-07 13:15:54.243 ServerApp] notebook_shim | extension was successfully loaded.
[D 2022-07-07 13:15:54.243 ServerApp] [jupyter_nbextensions_configurator] Loading 0.4.1
[D 2022-07-07 13:15:54.243 ServerApp] [jupyter_nbextensions_configurator]   Editing templates path to add /usr/local/lib/python3.9/site-packages/jupyter_nbextensions_configurator/templates
[D 2022-07-07 13:15:54.243 ServerApp] [jupyter_nbextensions_configurator]   Editing nbextensions path to add /usr/local/lib/python3.9/site-packages/jupyter_nbextensions_configurator/static
[D 2022-07-07 13:15:54.243 ServerApp] Traceback (most recent call last):
      File "/usr/local/lib/python3.9/site-packages/jupyter_server/extension/manager.py", line 351, in load_extension
        extension.load_all_points(self.serverapp)
      File "/usr/local/lib/python3.9/site-packages/jupyter_server/extension/manager.py", line 231, in load_all_points
        return [self.load_point(point_name, serverapp) for point_name in self.extension_points]
      File "/usr/local/lib/python3.9/site-packages/jupyter_server/extension/manager.py", line 231, in <listcomp>
        return [self.load_point(point_name, serverapp) for point_name in self.extension_points]
      File "/usr/local/lib/python3.9/site-packages/jupyter_server/extension/manager.py", line 224, in load_point
        return point.load(serverapp)
      File "/usr/local/lib/python3.9/site-packages/jupyter_server/extension/manager.py", line 150, in load
        return loader(serverapp)
      File "/usr/local/lib/python3.9/site-packages/jupyter_nbextensions_configurator/__init__.py", line 247, in load_jupyter_server_extension
        if static_files_path not in webapp.settings['nbextensions_path']:
    KeyError: 'nbextensions_path'
    
[W 2022-07-07 13:15:54.243 ServerApp] jupyter_nbextensions_configurator | extension failed loading with message: 'nbextensions_path'

I have also reported this here: jupyter/notebook_shim#9, but I'm not sure which project it is best reported in.

[echarles]

Thx @scmmmh for reporting. I have the same issue and will look for a fix.

[echarles]

Just opened Jupyter-contrib/jupyter_nbextensions_configurator#141 to fix this.

[echarles]

Jupyter-contrib/jupyter_nbextensions_configurator#141 is waiting for reviews from the core maintainers. Please upvote that PR in the jupyter-contrib repository if you want to get this move forward.

[dleen]

Just saw the link to the docs:

    $ pip install jupyter_nbextensions_configurator
    $ jupyter nbextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
    $ jupyter nbextension enable --sys-prefix --py jupyter_nbextensions_configurator
    $ jupyter serverextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
    $ jupyter serverextension enable --sys-prefix --py jupyter_nbextensions_configurator

Thanks @echarles !

That indeed fixes the stack trace. However when I apply the patch locally I am still seeing a bunch of 404s for the configurator:

[W 2022-11-02 19:59:16.514 ServerApp] 404 GET /nbextensions/nbextensions_configurator/tree_tab/main.js

and the configurator doesn't actually load.

Any pointers where I might start debugging this?

For example:

jupyter nbclassic-extension list                                                   

Known nbextensions:
  config dir: /Users/dleen/.jupyter/nbconfig
    notebook section
      nbextensions_configurator/config_menu/main  enabled
      - Validating: problems found:
        - require?  X nbextensions_configurator/config_menu/main
    tree section
      nbextensions_configurator/tree_tab/main  enabled
      - Validating: problems found:
        - require?  X nbextensions_configurator/tree_tab/main

[echarles]

Thx for trying out @dleen and reporting here.

I have tested in a clean env and opened #174 to update the documentation. The following steps worked fine for me (the extension configuration is show and operational, no 404).

pip install nbclassic
pip install 'jupyter_nbextensions_configurator @ git+https://github.com/datalayer-externals/jupyter-notebook-configurator.git@fix/nbclassic#egg=jupyter_nbextensions_configurator'
jupyter nbclassic-extension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
jupyter nbclassic-extension enable --sys-prefix --py jupyter_nbextensions_configurator
jupyter nbclassic-serverextension enable --sys-prefix --py jupyter_nbextensions_configurator
jupyter nbclassic

[echarles]

If I install and enable the last published jupyter_nbextensions_configuratorand launch jupyter notebook (6.5.x), I get the following warning (the extension works fine).

[W 10:50:32.585 NotebookApp] [jupyter_nbextensions_configurator] nbextension 'nbextensions_configurator/config_menu/main' has duplicate listings in both '/Users/echarles/opt/miniconda3/envs/notebook/lib/python3.9/site-packages/jupyter_nbextensions_configurator/static/nbextensions_configurator/config_menu/config_menu.yaml' and '/Users/echarles/opt/miniconda3/envs/notebook/share/jupyter/nbextensions/nbextensions_configurator/config_menu/config_menu.yaml'

[echarles]

To add more info related to #140 (comment)

After enabling with jupyter nclassic-* and launching with jupyter nbclassic or jupyter notebook does not show any 404 and the extension is working fine on my env.

[echarles]

jupyter_nbextensions_configurator 0.6.1 has just been released and should fix this issue. Please test in you env and report if it works or not for you with the latest nbclassic and/or notebook 6. Thx.

[echarles]

If you test with nbclassic, please use the following commands before testing

jupyter nbclassic-extension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
jupyter nbclassic-extension enable --sys-prefix --py jupyter_nbextensions_configurator
jupyter serverextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
jupyter serverextension enable --sys-prefix --py jupyter_nbextensions_configurator

For notebook:

jupyter nbextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
jupyter nbextension enable --sys-prefix --py jupyter_nbextensions_configurator
jupyter serverextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite
jupyter serverextension enable --sys-prefix --py jupyter_nbextensions_configurator

[dleen]

@echarles That's great news!

I don't believe the install command exists:

jupyter serverextension install --sys-prefix --py jupyter_nbextensions_configurator --overwrite

e.g.

> jupyter serverextension
Please supply at least one subcommand: disable, enable, list

[scmmmh]

I can confirm that this now works for me.

[echarles]

Thx. Closing as fixed.