Unable to open jupyter notebooks

[AHarouni]

Thanks for creating this extension. I managed to use the server option. However, I was unable to configure the extension to open any of the notebooks. I get error Notebook source is missing although I am placing absolute path

I tired all 3 types notebook notebook-grid and notebook-voila but they all failed

- catalog: Notebooks
  title: Label Clients
  description: test1
  source: /label/03_clients.ipynb
  cwd: /label
  type: notebook

- catalog: Notebooks
  title: test w voila
  description: test 2
  source: /label/03_clients.ipynb
  cwd: /label
  type: notebook-voila

- catalog: Notebooks
  title: notebook w grid
  description: test3
  source: /label/03_clients.ipynb
  cwd: /monia/nvflare/notebooks
  type: notebook-grid

My system is

jupyter serverextension list
config dir: /opt/conda/etc/jupyter
    jupyter_server_proxy  enabled 
    - Validating...
      jupyter_server_proxy  OK
    jupyter_app_launcher  enabled 
    - Validating...
      jupyter_app_launcher 0.1.5 OK
    jupyterlab  enabled 
    - Validating...
      jupyterlab 3.5.0 OK
    jupytext  enabled 
    - Validating...
      jupytext 1.14.1 OK
    jupyter_tensorboard  enabled 
    - Validating...
      jupyter_tensorboard 0.2.0 OK

and

jupyter labextension list
JupyterLab v3.5.0
/opt/conda/share/jupyter/labextensions
        jupyterlab_pygments v0.2.2 enabled OK (python, jupyterlab_pygments)
        jupyter_app_launcher v0.1.5 enabled OK (python, jupyter_app_launcher)
        clara-viz-widgets v0.2.2 enabled OK (python, clara-viz-widgets)
        jupyterlab_tensorboard_pro v0.3.2 enabled OK (python, jupyterlab_tensorboard_pro)
        jupyterlab-nvdashboard v0.7.0 enabled OK (python, jupyterlab_nvdashboard)
        jupyterlab-jupytext v1.3.8+dev enabled OK (python, jupytext)
        @jupyter-widgets/jupyterlab-manager v3.1.1 enabled OK (python, jupyterlab_widgets)
        @jupyterlab/server-proxy v3.2.2 enabled OK

[trungleduc]

Resolved