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.
Hello kdlin1, assuming you work in a Python environment, can you please run $ python -m pip freeze and give us the resulting packages, their versions and whether this is a virtual environment (if so tell us what environment).
If you not working with Python, just issue $ jupyter --version on the cmd-line and edit your original post with the output.
If you solved the issue, please provide an answer for the community
I can reproduce this on an NVIDIA Jetson (aarch64) - it’ll take me a couple of hours to trim things down to a minimal example. It doesn’t seem to be affecting the operation of my applications. Also, this environment is frozen at Python 3.6, so “get a newer Python” is not a solution.