Please execute following commands to fix this issue
Pkg.Registry.add(Pkg.RegistrySpec(url = "$(Pkg.pkg_server())/registry/JuliaPro", uuid = "32d90280-1a8c-50bf-8a59-7bd9ce241c9a"))
Pkg.add("PkgAuthentication")
You maybe asked to authenticate after executing above commands. If you’re planning on using the IDE in your new environment, I would suggest you to execute following commands as well.
Pkg.add("Atom")
Pkg.add("Juno")