I updated to macOS 12.1 this week and now when I try to launch a Jupyter Notebook I get an ERR_CONNECTION_REFUSED for http://localhost:8888/tree?token=[TOKEN]
I am guessing this is the same problem as #28. Please try following the recommendation in that ticket: delete the folder ~/Library/Application Support/SageMath/9.4/Jupyter
I updated to macOS 12.1 this week and now when I try to launch a Jupyter Notebook I get an ERR_CONNECTION_REFUSED for http://localhost:8888/tree?token=[TOKEN]