Thatâs strange. For me it sometimes takes a few seconds to show up but it is working with similar package versions. Is there a debugger icon in the sidebar? Are there any error messages in the web developer console, or in the terminal from which the JupyterLab was started?
No errors in the terminal where it was started. I am running from a Docker image calling: âjupyter notebookâ with JUPYTER_ENABLE_LAB=yes if that matters
Here is screen shot of web console. There are some content blockers for the npmjs extension registry and 2 fetch errors in PUT commands. Both debug to same spot you see in debugger.
From the calling terminal here are all warnings/errors:
[W 2021-07-04 00:48:47.533 LabApp] 'allow_origin_pat' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.533 LabApp] 'base_url' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.533 LabApp] 'terminals_enabled' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.533 LabApp] 'terminals_enabled' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.533 LabApp] 'ip' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.533 LabApp] 'token' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:48:47.534 LabApp] 'allow_remote_access' has moved from NotebookApp to ServerApp. This config will be passed to ServerApp. Be sure to update your config before our next release.
[W 2021-07-04 00:58:14.588 LabApp] Could not determine jupyterlab build status without nodejs
[W 00:49:42.417 NotebookApp] No such channel: 'control'
I donât know enough about the debugger but I think that the last message [W 00:49:42.417 NotebookApp] No such channel: 'control' and the use of the notebook server instead of jupyter_server might be related. I think if @jtp or @JohanMabille might be able to clarify if jupyter_server is needed for the debugger to work correctly (or how to fix the lack of control channel availability).
I switched to calling :jupyter lab" instead of notebook and still do not see debugger option. I am still seeing the missing âcontrolâ error but from ServerApp instead of NotebookApp.
[W 2021-07-05 00:45:04.226 ServerApp] No such channel: 'control'
See jupyterlab/jupyterlab - Gitter. I would advise to try creating a fresh virtual environment; If you are using conda, I think that some of the packages might be loaded from a different path, otherwise some of the packages might be outdated but it is hard for me to pinpoint which one to update, so I would just create a fresh env.
I do not run it in a conda or any virtual env. I am running inside a docker image with just the packages I have listed installed. i updated everything to latest and still see the debugger missing.
In addition to the control error. i am also seeing [W 2021-07-13 20:52:53.628 LabApp] Could not determine jupyterlab build status without nodejs Is nodejs required?
Checking logs when I switch kernels I do still get [W 2021-07-30 18:22:03.947 ServerApp] No such channel: âcontrolâ error message. I believe this is the root of my problem. I think ill post a separate thread on this error and see if anyone has thoughts on that and will circle back to this thread if it is resolved. Thanks again!
