Anaconda jupyter, no such file or directory on mac
If you encounter such error when launching jupyter using Anaconda:
no such file or directory: Users/my_name/opt/anaconda3/bin/jupyter_mac.command
and while for ZSH you are using the plugin Oh-My-Zsh and also iTerm for terminal,
The solution is only open iTerm and then upgrade it.
For Catalina read this.