Loading widget... and/or Error displaying widget: model not found

Hi, I’ve encounter an error on bqplot after updating widegts. Figure/table widgets work as expected; however, bqplot only works in voila preview and when using regular notebook. In JLab i either get a never ending loading or error displaying widget. I’ve tried uninstalling/re-installing bqplot, jupyterlab manager, testing sliders (some work), etc… Any ideas what it could be? I have the following configurations: Any help appreciated. Thanks!

JupyterLab v1.0.2
Known labextensions:
   app dir: /Users/Me/miniconda3/envs/JupyterProjects/share/jupyter/lab
        @jupyter-voila/jupyterlab-preview v0.1.0  enabled  OK
        @jupyter-widgets/jupyterlab-manager v1.0.1  enabled  OK
        bqplot v0.5.0-alpha.2  enabled  OK
        jupyterlab-chart-editor v1.2.0  enabled  OK
        jupyterlab-plotly v1.0.0  enabled  OK
        plotlywidget v1.0.0  enabled  OK

Error displaying: 
manager.js:251 Uncaught (in promise) Error: Module bqplot, semver range ^0.4.6 is not registered as a widget module
    at WidgetManager.loadClass (manager.js:251)
    at WidgetManager.<anonymous> (manager-base.js:263)
    at step (manager-base.js:44)
    at Object.next (manager-base.js:25)
    at manager-base.js:19
    at new Promise (<anonymous>)
    at push.hs2k.__awaiter (manager-base.js:15)
    at WidgetManager.push.hs2k.ManagerBase._make_model (manager-base.js:257)
    at WidgetManager.<anonymous> (manager-base.js:246)
    at step (manager-base.js:44)

[oronimbus]

FYI I just fixed this issue on my side using sudo jupyter labextension install bqplot@0.4.6. Bqplot charts now correctly display in both JL and JNB. This was suggested in #885 . Thanks!

[tslaton]

Installing bqplot from master works for me, as I am just trying to build a prototype right now anyway:

pip install -e git+git://github.com/bloomberg/bqplot.git@master#egg=bqplot

If you’re relying on any kind of stability though, you might want to wait for a release.