Minecolonies version

1.12.2-0.10.256-beta

Version:

Expected behavior

Not to crash?

Actual behaviour

Crashed

Steps to reproduce the problem

grrr.
Upgrade the library from dwarven4 to dwarven5
do not profit.
crash-2019-04-29_01.53.41-server.txt

This causes a crash as soon as chunk is loaded (server autoloads)