Version
MCA Version: 7.5.18, Minecraft version: 1.20.1, Modloader: Fabric v0.15.11

Description
We are playing on relatively large modpack, but crash.log pointed out at MCA Reborn, exactly these methods:

	at fabric.net.mca.server.world.data.Nationality.getRegionId(Nationality.java:67)
	at fabric.net.mca.server.SpawnQueue.shouldGetConverted(SpawnQueue.java:145)
	at fabric.net.mca.server.SpawnQueue.addVillager(SpawnQueue.java:160)

The server crashed with exception: java.util.concurrent.CompletionException: net.minecraft.class_148: Accessing LegacyRandomSource from multiple threads. It happened suddenly, so I cannot really provide the steps to reproduce this issue.

I'm including the crash log for full info:
crash-2024-07-29_12.17.54-server.txt

I assume a performance mod is stumbling across some apparantly unsafe code from MCA. It should be fixable from our side.

Great to hear that! Expecting more news from your side then.