@Neonlights Did you meanwhile solve the issue?
I remember having problems with setting up atom as well. The uber-juno package did not work properly.
If I recall it properly, I solved it by basically installing all the packages manually that are usually installed automatically by uber-juno. This idea was based on this thread, especially this comment.
Furthermore, make sure you add the Atom package in julia’s REPL, before running Atom.