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…

I finally decided to just blow away my conda installation and start over. That seemed to fix the problem, but it’s not really a solution.

Had exactly the same issue. The error message is pretty non-descriptive… I ran ‘jupyter lab build’ from cmd line got a ‘build failed’ message and checked the generated log file (path shown in the error message). In my case it turned to be an issue with ssl-verification in yarn (called during the bu…

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

JupyterLab

psward June 28, 2020, 9:54am 2

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

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

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