I was there a moment ago.
I tried to uninstall Julia and Atom and tried to do the process again.
But, A funny thing is Julia and atom has the previous setting even though I remove the apps.
What I did is to go to user ID folder. In finder, the icon is house shape. the folder name should be the ID you use on your mac.
And remove Julia and Atom folders which are hidden.
Open Terminal, go to your home folder, I mentioned above., your case, 'Users/laura'
rm -rf .julia
rm -rf .atom
Now you completely remove Julia and Atom.
Download Julia and Atom again and follow the instruction of Juno.
Now I don't have any problem.