This error only presents itself when i install ForgeEssntials. I have tried both 1375 and 1378 with no success.

Running SkyFactory 3 [3.0.15]

I have tried reinstalling the server/modpack, updating the box, reinstalling java on said box.

If i remove ForgeEssentials the server runs fine

crash-2018-09-19_22.23.40-server.txt
latest.log

Possible Corruption of Maven jars?

ftbu{0.0.0} [FTBUtilities] (FTBUtilities-1.1x-3.6.5.jar)

This mods has a cfg option to disable ranks which enables compatibility with FE.
Does this resolve your issue?

@Dmitchell94, is your issue still open on your side?