Can't install packages in Sublime 3

I installed Sublime 3, and the package manager. Strangely enough it doesn't work. I can't install packages. It worked when I installed it, but after the last Ubuntu upgrade no more. When I go to Package Control > Install Package I see sublime Loading Repositories at the bottom line, but that's it. It stops after a few seconds.

I tried to manually install the package I want, but that doesn't seem to work either, likely because I do something wrong: 1- create the folder (Less) in the opt/sublime_text/packages/Less 2- Paste the files in that folder from https://github.com/danro/Less-sublime

I know I do something completely wrong, but I have no idea what.