Comment (by Roland Haas):

Is this a M1 or x86 based system? Freshly installed or with many packages already installed? Following the Prerequisites at https://github.com/nds-org/jupyter-et/blob/master/tutorial-server/notebooks/CactusTutorial.ipynb ?

Please try and provide the information asked for in http://einsteintoolkit.org/support.html#general-guidelines-for-questions

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2699/etk-fails-on-mac-os-ventura