CODEWITHSUNDEEP
pythonjupyter-labtqdmjupyter-widget
Beezley
Beezley

Reputation: 61

JupyterLab: Failed to load model class 'HBoxModel'

I am using JupyterLab and trying to run tqdm. I've had an error persist for quite a while that seems to be a JS error.

Extensions:

Other labextensions (built into JupyterLab)
   app dir: /opt/homebrew/Cellar/[email protected]/3.9.10/Frameworks/Python.framework/Versions/3.9/share/jupyter/lab
        @jupyter-widgets/jupyterlab-manager v5.0.3 enabled OK
        jupyter-leaflet v0.17.2 enabled OK

Error Message:

Failed to load model class 'VBoxModel' from module '@jupyter-widgets/controls'
Error: Module @jupyter-widgets/controls, version ^1.5.0 is not registered, however, 2.0.0 is

I have tried, re-installing, re-building all of the extensions listed above to no avail.

Upvotes: 5

Views: 19526

Answers (2)

Miguel Tomás
Miguel Tomás

Reputation: 1911

There is another possible solution on Jupyter.org forum here: https://discourse.jupyter.org/t/error-displaying-widget-model-not-found-how-to-fix-this/11886/3

jupyter labextension list
pip uninstall jupyterlab_widgets
pip install jupyterlab_widgets

Upvotes: 2

Nikolai Janakiev
Nikolai Janakiev

Reputation: 366

I had the same issue when upgrading to jupyterlab==3.6.3.

After upgrading ipywidgets to the at that time latest version 8.0.6, it still failed. I managed to fix the issue by downgrading then to ipywidgets==7.7.5.

Upvotes: 3

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