I don't know what is causing the crash, all I know is that it said to set populateNeighborTable to true.

I didn't find any crash-report, but I found this in the minecraft game output which might help

Caused by: java.lang.UnsupportedOperationException: A mod tried to access the state neighbor table directly. Please report this at https://github.com/malte0811/FerriteCore/issues. As a temporary workaround you can enable "populateNeighborTable" in the FerriteCore config

at TRANSFORMER/[email protected]/malte0811.ferritecore.fastmap.table.CrashNeighborTable.crashOnAccess(CrashNeighborTable.java:101)

at TRANSFORMER/[email protected]/malte0811.ferritecore.fastmap.table.CrashNeighborTable.rowKeySet(CrashNeighborTable.java:77)

at TRANSFORMER/[email protected]/me.jellysquid.mods.lithium.common.state.FastImmutableTable.(FastImmutableTable.java:36)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.state.StateHolder.handler$bgi000$postCreateWithTable(StateHolder.java:528)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.state.StateHolder.m_61133_(StateHolder.java:1052)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.state.StateDefinition.(StateDefinition.java:68)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.state.StateDefinition$Builder.m_61101_(StateDefinition.java:157)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.Block.(Block.java:176)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.AirBlock.(AirBlock.java:12)

at TRANSFORMER/[email protected]/net.minecraft.world.level.block.Blocks.(Blocks.java:39)

See #96 (comment).