After a recent update to my conda installation, when I tried to rebuild the extensions on jupyter lab, I got the following error: [I 19:59:56.504 LabApp] Building jupyterlab assets (build:dev) [W 20:00:12.615 LabApp] Build failed, running a clean and rebuild [I 20:00:12.663 LabApp] Cleaning /anacon…

'AppOptions' object has no attribute 'all' when rebuilding lab

psward June 28, 2020, 9:54am 2

Did you ever find a solution to this issue? I’m also getting the same error.

Topic		Replies	Views
'AppOptions' object has no attribute 'extensions' extensions help-wanted	2	2900	October 31, 2021
Jupyter lab build fails with webpack-cli error extensions	3	935	September 30, 2022
Jupyterlab extension apod example doesnt build JupyterLab	3	46	May 7, 2025
Jupyter lab failed to build extensions help-wanted	6	12508	June 30, 2021
Issues with new Jupyter Lab pre-release JupyterLab release	7	1043	May 31, 2019