IPKernelApp Error and Warning

I usually use the following command to start Jupyterlab:

jupyter lab --no-browser

After I start a browser, it immediately shows the following error and warning messages:

[IPKernelApp] ERROR | No such comm target registered: jupyter.widget.control
[IPKernelApp] WARNING | No such comm: 8d87f402-5faa-45c8-933f-e3560ac90fb7

Can someone please suggest how I can debug the error and warning? Thanks.

I am running Ubuntu 20.04.4 LTS on Windows WSL2. Jupyterlab version is 3.3.3 and ipython version is 8.2.0.

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