Error when invoking open3d.web_visualizer.draw in jupyterlab for non blocking visualization.

[geppi]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for master branch).

Describe the issue

Created a Python venv with python3 -m venv --copies --system-site-packages /home/user/open3d.

python --version
Python 3.10.6

Installed jupyterlab, numpy and open3d via pip.

pip list |grep jupyterlab
jupyterlab              3.4.8
jupyterlab-pygments     0.2.2
jupyterlab_server       2.15.2
jupyterlab-widgets      3.0.3

pip list |grep open3d
open3d                  0.16.0

Run the below code in a jupyterlab notebook.

Steps to reproduce the bug

import numpy as np
import open3d as o3d
from open3d.web_visualizer import draw

# Generate some neat n times 3 matrix using a variant of sync function
x = np.linspace(-3, 3, 401)
mesh_x, mesh_y = np.meshgrid(x, x)
z = np.sinc((np.power(mesh_x, 2) + np.power(mesh_y, 2)))
z_norm = (z - z.min()) / (z.max() - z.min())
xyz = np.zeros((np.size(mesh_x), 3))
xyz[:, 0] = np.reshape(mesh_x, -1)
xyz[:, 1] = np.reshape(mesh_y, -1)
xyz[:, 2] = np.reshape(z_norm, -1)
print('xyz')
print(xyz)

pcd = o3d.geometry.PointCloud()
pcd.points = o3d.utility.Vector3dVector(xyz)
draw(pcd)

Error message

[Open3D INFO] Window window_0 created.
[Open3D INFO] EGL headless mode enabled.
WARNING: Using soft CircularBuffer (6144 KiB)
FEngine (64 bits) created at 0x7f7159fe6010 (threading is enabled)
[Open3D INFO] ICE servers: {"stun:stun.l.google.com:19302", "turn:user:password@34.69.27.100:3478", "turn:user:password@34.69.27.100:3478?transport=tcp"}
[Open3D INFO] Set WEBRTC_STUN_SERVER environment variable add a customized WebRTC STUN server.
[Open3D INFO] WebRTC Jupyter handshake mode enabled.
[Open Browser Console for more detailed log - Double click to close this message]
Model class 'WebVisualizerModel' from module 'open3d' is loaded but can not be instantiated
TypeError: r._deserialize_state is not a function
at f._make_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab-manager/static/150.3e1e5adfd821b9b96340.js?v=3e1e5adfd821b9b96340:1:7933)

Expected behavior

Visualization in non blocking mode.

Open3D, Python and System information

- Operating system: Ubuntu 22.04
- Python version: Python 3.10.6
- Open3D version: open3d 0.16.0
- System architecture: x86
- Is this a remote workstation?: no
- How did you install Open3D?: pip

Additional information

I get the error in Firefox as well as Brave (Chromium).

[geppi]

It looks like this is caused by an incompatibility of the open3d webvisualizer in jupyter and ipywidgets version 8.
I found the issue Incompatible FigureWidget with ipywidgets 8.0.0rc0 #3686 in the plotly repo. I had the following versions installed.

pip list |grep widget
ipywidgets             8.0.2
jupyterlab-widgets     3.0.3
widgetsnbextension     4.0.3

The workaround suggested in the plotly issue works for me as well, i.e.

pip install ipywidgets==7.7.1 jupyterlab-widgets==1.1.1
.....
Successfully installed ipywidgets-7.7.1 jupyterlab-widgets-1.1.1 widgetsnbextension-3.6.1

[geppi]

According to this comment from one of the ipywidgets developers ipywidgets 7.7.2 does provide the updated jupyterlab_widgets dependency on the correct version of jupyterlab_widgets.

[tonmoy-saikia]

thanks! I was facing the same issue and downgrading helped

[tiaden]

+1 I have the same issue. Hoping for a fix as soon as possible.

[edufschmidt]

thanks! I was facing the same issue and downgrading helped

same here.

[geppi]

I closed the issue because it's fixed by pull request #6239 in master.
However, the current latest release 0.17 still requires the workaround described above.