Rendering of Plotly FigureWidget failed in JupyterLAb

[sim-san]

Describe the bug:
I write some libary which uses the Plotly FigureWidget to create some interactive plot. This plot runs in the normal jupyter notebook. But in the jupyter lab I only see the message: "loading widget..."

Expected behaviour:
TODO

Steps to reproduce the issue:
TODO

Technical details:

• Workspace version: 0.8.7
• Docker version: Docker version 19.03.5, build 633a0ea838
• Host Machine OS (Windows/Linux/Mac): Linux
• Command used to start the workspace: ml-hub
• Browser (Chrome/Firefox/Safari): Firefox

Possible Fix:

While searching for the Jupyter-Lab extension I saw that the @jupyterlab/plotly extension is deprecated.

This package is being deprecated. Please use the Plotly-supported jupyterlab-plotly (https://www.npmjs.com/package/jupyterlab-plotly). See the plotly.py README for more info: https://github.com/plotly/plotly.py#jupyterlab-support-python-35)

Additional context:
Installation in the Dockerfile:

ml-workspace/Dockerfile

Line 736 in ae85a02

jupyter labextension install @jupyterlab/plotly-extension && \

[sim-san]

Steps to reproduce the issue:
Run this cell inside the jupyter lab

import plotly.graph_objects as go

f = go.FigureWidget()
f.add_scatter(y=[2, 1, 4, 3]);
f.add_bar(y=[1, 4, 3, 2]);
f.layout.title = 'Hello FigureWidget'
f.show()

[sim-san]

A normal figure works:

import plotly.graph_objects as go
fig = go.Figure()
fig.add_trace(go.Scatter(y=[2, 1, 4, 3]))
fig.add_trace(go.Bar(y=[1, 4, 3, 2]))
fig.update_layout(title = 'Hello Figure')
fig.show()

[lukasmasuch]

Thanks for reporting. The issue seems to be fixed with the newest version (0.10.4).