Game Version: 1.18.2
Forge Version: 40.2.9
Atlaslib Version: 1.18.2-1.1.8
Mod Version: 1.18.2-1.2.1
What is the Issue: A NullPointerException gets thrown whenever a player joins the server. Disabling the mod seems to get rid of the exception which makes me believe it comes from this mod.
What Caused the Issue: Throws a stacktrace whenever a player joins or executes the /debugHordes command.
Server Log: https://mclo.gs/2TQEtWR#L734
Hordes Log: https://mclo.gs/3AqtgR5

As far as I can tell it's not caused by the mod, but I will do some testing to double check, have you changed the config files at all?

The only values I changed are the "playerInfectChance" and "villagerInfectChance" values in the hordes-common.toml file, but that's it.