Fixes startup issue from previous build.

This update provides full 1.13 support as well as backward compatibility for as late as 1.8. While support on versions lower than 1.13 is still there, it hasn't been tested as thoroughly as 1.13. Please report any issues you find on our official issue tracker.

This update was a mountain of work that @md678685 tackled and did an amazing job on. If you want to support him, check out our patreon, even $1/month helps <3

Release Notes on Github
https://github.com/EssentialsX/Essentials/releases/tag/2.16.0