Minecolonies version

Version: 0.10.493-RELEASE

Expected behavior

Not crashing;
possibly citizens being able to sleep?

Actual behaviour

Shortly after loading into the world the only player on the server with a Minecolony crashed, giving me his crashlog (linked here).

Reading it, it seems to be something to do with a citizen's sleeping habits.

(possibyl unrelated is that all his citizens look like this, but they work as usual)

Steps to reproduce the problem

I've got nothing, sorry.

I'm also seeing ghostly citizens with the 1.12.2 version. Is it a Halloween thing?
Java 1.8.0_231-b11
minecolonies-1.12.2-0.10.488-RELEASE-universal

halloweeen

you're launching with a too old java version: 1.8.0_51
try updating it pls, you can find a new one here: https://adoptopenjdk.net/