When I open SageMath-9.0.app under macOS Catallina (10.15.2), I get an immediate pop-up error window saying, "Jupyter Server failed to start".
The log shows: ┌────────────────────────────────────────────────────────────────────┐ │ SageMath version 9.0, Release Date: 2020-01-01 │ │ Using Python 3.7.3. Type "help()" for help. │ └────────────────────────────────────────────────────────────────────┘ Please wait while the Sage Jupyter Notebook server starts... However, I can get the Jupyter server to start with an indirect method that was never required in earlier versions of SageMath-x.x.app, namely: 1. In Finder, Show package contents for SageMath-9.0.app. 2. Navigate in Finder to Contents/MacOS. 3. Double-click Sage. That both starts the server and opens the expected client window in Safari, from which I can open and evaluate cells in an existing notebook or create a new SageMath 9.0 notebook. So something that used to be "hooked up" between the SageMath-x.x.app and the command to start the jupyter server has been broken with 9.0. -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/sage-support/467310b7-04a8-4093-ba72-bbac70ee2ff1%40googlegroups.com.