New SageMath 9.0 installation not running on Catalina. SageMath 8.7 worked fine.

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I just downloaded that Sage 9.0 app for Mac OS X (Catalina). When I try to open it, it says that the Jupyter server failed to start. I can't open a terminal session either. The log says this:

shell-init: error retrieving current directory: getcwd: cannot access parent directories: Operation not permitted shell-init: error retrieving current directory: getcwd: cannot access parent directories: Operation not permitted

I had been using Sage 8.7 and it was working fine. I just downloaded 9.0 and deleted 8.7. Could this have caused the problem?

Thanks!