I have troubles replicating a Jupyter Lab install on a new PC. It is working fine on my previous one.
I am unable to display simple widgets (like a checkbox from ipywidgets or ipyvuetify).
I checked that jupyter-widgets is enable with jupyter labextension list. The results is :

    jupyter-vue v1.7.0 enabled ok

    jupyter-vuetify v1.8.4 enabled ok

    @jupyter-widgets/jupyterlab-manager v5.0.2 enabled ok (python, jupyterlab_widgets)

In the notebook, when i try to display a widget, the cell display a Javascrip error :

    [Open Browser Console for more detailed log - Double click to close this message]

    Failed to load model class 'CheckboxModel' from module '@jupyter-widgets/controls'

    Error: Module @jupyter-widgets/controls, version ^1.5.0 is not registered, however,         

    2.0.0 is

    at f.loadClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/134.083e6b37f2f7b2f04b5e.js?v=083e6b37f2f7b2f04b5e:1:74976)

    at f.loadModelClass (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/150.467514c324d2bcc23502.js?v=467514c324d2bcc23502:1:10721)

    at f._make_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/150.467514c324d2bcc23502.js?v=467514c324d2bcc23502:1:7517)

    at f.new_model (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/150.467514c324d2bcc23502.js?v=467514c324d2bcc23502:1:5137)

    at f.handle_comm_open (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/150.467514c324d2bcc23502.js?v=467514c324d2bcc23502:1:3894)

    at _handleCommOpen (http://localhost:8888/lab/extensions/@jupyter-widgets/jupyterlab- 

    manager/static/134.083e6b37f2f7b2f04b5e.js?v=083e6b37f2f7b2f04b5e:1:73392)

    at b._handleCommOpen (http://localhost:8888/static/lab/jlab_core.86360d749a1ef5f29afb.js? 

    v=86360d749a1ef5f29afb:2:924842)

    at async b._handleMessage 

    (http://localhost:8888/static/lab/jlab_core.86360d749a1ef5f29afb.js? 

    v=86360d749a1ef5f29afb:2:926832)