Hello wukakuki,
I apologize. I believe I answered this too quickly. I have a bit more information that I would like to check if this could be a lighting build issue as opposed to an OSX issue.
1.) Is this a github build or one from the Launcher?
2.) Do you see the UnrealLightmass process in your viewport while the lighting is stuck at 0%?
3.) Can you open your swarm agent while building your lighting and notice any change there?
4.) Does this happen in 4.8?
5.) Can you create another blank project and build there?
Thank you,