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(NeoForge 1.21.1) (Spawn mod 4.0.4-1.21.1) (C2ME + Spawn's mob-spawning code + chunk generation failing) Hamster Giving Hard Time #102

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@HuevosKicker

Got stuck around ~80% at progress of a new world. The new world never got to be created.

Key error block: com.ishland.c2me.fixes.worldgen.threading_issues.common.CheckedThreadLocalRandom$1: ThreadLocalRandom accessed from a different thread (owner: Server thread, current: c2me-worker-4) Caused by: java.util.ConcurrentModificationException: ThreadLocalRandom accessed from a different thread (owner: Server thread, current: c2me-worker-4) at ...CheckedThreadLocalRandom.handleNotOwner(...) ... at TRANSFORMER/spawn@4.0.4-1.21.1/com.ninni.spawn.server.entity.mob.Hamster.finalizeSpawn(Hamster.java:89) at ...NaturalSpawner.spawnMobsForChunkGeneration(...)

Link to full log: https://mclo.gs/3cTWuVd

This looks related to #59, #62 and #90— same underlying issue, but happening with Hamster this time instead of Coastal Crabs, so it seems to be a broader pattern in how mob spawning grabs randomness during chunk generation rather than being specific to one animal.

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