I'm trying to install TOC extension for Jupyter lab.
The issue is the same for for both ways of installation: from command window or from extension manager.
1) I'm installing an extension using command:
jupyter labextension install @jupyterlab/toc
2) Then I have to build Jupyter lab using:
jupyter lab build
3) Icons from sidebar disappearing like in this issue. Here is the screen.
And I can not return to normal view unless I reinstall Anaconda. What can I do for correct work? Or at list how can I return to correct build of Jupyter Lab?
I will suggest upgrading to the latest version of Jupyterlab. I was having a similar error as mentioned here https://github.com/jupyterlab/jupyterlab/issues/7158 and the problem has disappeared after I upgrade from 1.0.2 (as per anaconda package) to 1.1.2.
Good luck and I hope this will solve your issue.