Bash kernel in Jupyter Notebook stopped working after upgrading to macOS Catalina

I was using the Bash kernel emulator in Jupyter Notebook while running macOS Mojave, but when I upgraded to Catalina, the kernel emulator stopped working. When I open up an existing Bash notebook or try to open a new one, I get a Kernel error message in the upper right of my notebook. I’ve also posted this question on Stack Overflow if you want to see the discussion going there.