There's an issue with the new versions of MySQL
The plugin refuses to connect to the server.

You're gonna need to add this parameter while connecting to the database:

useSSL=false

Since my MySQL server has no SSL certificates it can't provide an SSL connection

Some info:
mysql:
Ver 14.14 Distrib 5.7.20, for Linux (x86_64) using EditLine wrapper

minecraft server:
ver git-Bukkit-6e3cec8 (MC: 1.11.2) (Implementing API version 1.11.2-R0.1-SNAPSHOT)

Thanks!

Sorry false alarm