jupyterlab 2.0.0 - Error displaying widget: model not found

[ghuname]

Environment

• Operating System: Windows 10 64bit
• Python Version: Python 3.7.4
• How did you install Qgrid: pip
• Python packages:
  pip:
  ipython-genutils==0.2.0
  ipython==7.8.0
  jupyter-client==5.3.4
  jupyter-core==4.6.1
  jupyterlab-server==1.0.7
  jupyterlab==2.0.0
  notebook==6.0.3
  qgrid==1.3.0

conda:

ipython 7.8.0 py37h39e3cac_0 anaconda
ipython_genutils 0.2.0 py37_0 anaconda
jupyter_client 5.3.4 py37_0 conda-forge
jupyter_core 4.6.1 py37_0 conda-forge
jupyterlab 2.0.0 py_1 conda-forge
jupyterlab_server 1.0.7 py_0 conda-forge
notebook 6.0.3 py37_0 conda-forge
qgrid 1.3.0 pypi_0 pypi

jupyter labextension list:

JupyterLab v2.0.0
Known labextensions:
app dir: C:\Users\User\Miniconda3\share\jupyter\lab
@jupyter-widgets/jupyterlab-manager v2.0.0 enabled ok
@jupyterlab/toc v3.0.0 enabled ok
jupyterlab-plotly v1.5.3 enabled ok
plotlywidget v1.5.3 enabled ok
qgrid2 v1.1.2 enabled ok

Uninstalled core extensions:
qgrid2

Description of Issue

Running:

import pandas as pd
import qgrid
df = pd.DataFrame({"a": [1, 2, 3, 4], "b": [5, 6, 7, 8]})
grid = qgrid.show_grid(df)
grid

produce an error: Error displaying widget: model not found

In browser console there are many errors:

[gerrymanoim]

Hi ghuname - thanks for reporting this. The only thing that obviously stands out to me is the no provider for jupyter.extensions.jupyterWidgetRegistry. Can you try some of the steps in #261?

[ghuname]

Hi garrymanoim, as the #261 is quite long and people have tried many things, can you please specify what you would like me to do exactly?

[graidl]

I experience the same problem under Ubuntu and jupyterlab 2.01, all relevant packages are recent, pip qgrid 1.3.0 and and qgrid2 1.1.2 js part installed either in the official way or directly from the checked out git repo. Tried to follow the hints in #261, no success however. How may I possibly help?

[ghuname]

@gerrymanoim, can you please help us a bit?

[zhihanyue]

Same problem under jupyterlab 2.0. I reinstalled ipywidgets, jupyterlab and qgrid many times. The error becomes "Loading widget..." forever.

I tried to modify the version in qgrid.widget.js, and still it doesn't work.

[stefaneidelloth]

Related: #350