Model class 'PlotModel' from module 'k3d' is loaded but can not be instantiated

[RonaldEnsing]

K3D version: 2.14.5 Python version: 3.10.6 Operating System: Ubuntu 20.04

Description

I am trying to show a k3d plot in a jupyter notebook.

What I Did

I used the following conda environment.yml:

name: k3d
channels:
  - conda-forge
  - defaults
dependencies:
  - jupyter
  - k3d

Created the env with: conda env create -f environment.yml

Installed and enabled the nbextensions:

$ jupyter nbextension install --py --user k3d
$ jupyter nbextension enable --py --user k3d

Started the notebook with jupyter notebook.

and executed the following code:

import numpy as np
import k3d
plot = k3d.plot()
plot += k3d.points(np.random.randn(100), point_size=0.1)
plot.display()

Web console log / python logs

The code runs, but instead of showing the plot I get an error:

Model class 'PlotModel' from module 'k3d' is loaded but can not be instantiated

[hboekema]

I have the same issue when following these steps.

[CRTejaswi]

Facing the same issue. Browser shows a "Host not attached" error.

Duplicate of #371 As of now, downgrading works (flacle).

pip uninstall jupyterlab-widgets ipywidgets
pip install ipywidgets==7.7.1 jupyterlab-widgets==1.1

[RonaldEnsing]

I don't think this is a duplicate of #371.

The error of this issue is:

Model class 'PlotModel' from module 'k3d' is loaded but can not be instantiated

The error of #371 is:

Failed to load model class 'PlotModel' from module 'k3d'

[anilkul98]

I have exactly the same problem even after downgrading the ipywidgets and jupyterlab-widgets. Is there any other solution.

My Setting Details:

ubuntu 22.04 LTS python 3.7 k3d: 2.12.0

[artur-trzesiok]

Please try 2.15.0 (https://pypi.org/project/k3d/ for conda-forge we need to wait a little bit). @renefritze contribution should solve that

[artur-trzesiok]

any updates?