Carbonite will not work after "Battle for Azeroth 8.0 Pre-Expansion Patch".
We are working on making Carbonite work with WoW 8.x+.
You can download alpha version from BfA branch at:
https://github.com/mikepauer/Carbonite/archive/BfA.zip but keep it in mind that is a work in progress...
At the moment only
Carbonite Maps (main) module is being worked on, other modules will not work at all, so
disable them.