Error displaying widget

[focalplane]

Hi, sorry to file an issue, it is likely my platform.

The extension seems to install without any obvious errors but any usage of canvas outputs an error in Jupyter Lab. orjson is installed as well as all of the other dependencies as far as I can tell. Can you provide any advice to try to figure this out?

I'm using AARCH64 20.04, Python 3.8, Jupyter 3.0.16.

jupyter --version
jupyter core : 4.7.1
jupyter-notebook : 6.4.0
qtconsole : 5.1.0
ipython : 7.24.0
ipykernel : 5.5.5
jupyter client : 6.1.12
jupyter lab : 3.0.16
nbconvert : 6.0.7
ipywidgets : 7.6.3
nbformat : 5.1.3
traitlets : 5.0.5

jupyter labextension list
JupyterLab v3.0.16
/usr/local/share/pynq-venv/share/jupyter/labextensions
ipycanvas v0.9.1 enabled OK
jupyterlab-plotly v5.1.0 enabled OK
@jupyter-widgets/jupyterlab-manager v3.0.0 enabled OK (python, jupyterlab_widgets)
@voila-dashboards/jupyterlab-gridstack v0.2.0 enabled OK (python, voila-gridstack)
@voila-dashboards/jupyterlab-preview v2.0.2 enabled OK (python, voila)

Other labextensions (built into JupyterLab)
app dir: /usr/local/share/pynq-venv/share/jupyter/lab

The following source extensions are overshadowed by older prebuilt extensions:
@jupyter-widgets/jupyterlab-manager

[ciscostud]

You might have ipycanvas or jupyterlab installed locally

in the same notebook type in the cell '!which jupyter'
you want to see something like ~/miniconda3/envs/"YOUR_ENV-HappyPlace"/bin/jupyter.
if you get instead a bunch of ~.local/... bla bla ~.local/jupyer,,,,bla. , then remove those local packages, cause thats
where those little basterds live causing you grief.