After a very bad day at the office yesterday, the servers for GTA Online on PS4 are finally back online and are working as intended. This was confirmed over on <a href="https://support.rockstargames.com/hc/en-us/articles/200426246>Rockstar's Support page</a>, although there's no clear reason why the servers were affected yesterday, and why it was only on PS4. At least everything's back up and running now, and players can get back online.