---- Minecraft Crash Report ----
// I bet Cylons wouldn't have this problem.

Time: 2025-08-03 13:37:02
Description: Exception while updating neighbours

java.lang.IllegalStateException: Not implemented.
	at io.izzel.arclight.mixin.DecorationOps.callsite(DecorationOps.java:20)
	at knot//MC//net.minecraft.block.FluidBlock.redirect$bgl001$arclight$blockForm(LiquidBlockMixin.java:532)
	at knot//MC//net.minecraft.block.FluidBlock.receiveNeighborFluids(LiquidBlockMixin.java:159)
	at knot//MC//net.minecraft.block.FluidBlock.neighborUpdate(LiquidBlockMixin.java:145)
	at knot//MC//net.minecraft.block.AbstractBlock$AbstractBlockState.neighborUpdate(BlockBehaviour_BlockStateBaseMixin.java:1113)
	at knot//MC//net.minecraft.world.block.NeighborUpdater.tryNeighborUpdate(NeighborUpdaterMixin.java:534)
	at knot//MC//net.minecraft.world.block.ChainRestrictedNeighborUpdater$SixWayEntry.update(ChainRestrictedNeighborUpdater.java:132)
	at knot//MC//net.minecraft.world.block.ChainRestrictedNeighborUpdater.runQueuedUpdates(ChainRestrictedNeighborUpdater.java:78)
	at knot//MC//net.minecraft.world.block.ChainRestrictedNeighborUpdater.enqueue(ChainRestrictedNeighborUpdater.java:65)
	at knot//MC//net.minecraft.world.block.ChainRestrictedNeighborUpdater.updateNeighbors(ChainRestrictedNeighborUpdater.java:47)
	at knot//MC//net.minecraft.server.world.ServerWorld.updateNeighborsAlways(ServerLevelMixin.java:1044)
	at knot//MC//net.minecraft.server.world.ServerWorld.updateNeighbors(ServerLevelMixin.java:1474)
	at knot//MC//net.minecraft.world.World.setBlockState(LevelMixin.java:1172)
	at knot//MC//net.minecraft.world.World.setBlockState(LevelMixin.java:217)
	at knot//MC//net.minecraft.fluid.FlowableFluid.flow(FlowingFluidMixin.java:263)
	at knot//MC//net.minecraft.fluid.LavaFluid.flow(LavaFluidMixin.java:194)
	at knot//MC//net.minecraft.fluid.FlowableFluid.flowToSides(FlowingFluidMixin.java:162)
	at knot//MC//net.minecraft.fluid.FlowableFluid.tryFlow(FlowingFluidMixin.java:142)
	at knot//MC//net.minecraft.fluid.FlowableFluid.onScheduledTick(FlowingFluidMixin.java:464)
	at knot//MC//net.minecraft.fluid.FluidState.onScheduledTick(FluidState.java:79)
	at knot//MC//net.minecraft.server.world.ServerWorld.tickFluid(ServerLevelMixin.java:752)
	at knot//MC//net.minecraft.world.tick.WorldTickScheduler.tick(WorldTickScheduler.java:215)
	at knot//MC//net.minecraft.world.tick.WorldTickScheduler.tick(WorldTickScheduler.java:98)
	at knot//MC//net.minecraft.server.world.ServerWorld.tick(ServerLevelMixin.java:341)
	at knot//net.minecraft.server.MinecraftServer.tickWorlds(MinecraftServerMixin.java:1021)
	at knot//MC//net.minecraft.server.dedicated.MinecraftDedicatedServer.tickWorlds(DedicatedServerMixin_Vanilla.java:299)
	at knot//net.minecraft.server.MinecraftServer.tick(MinecraftServerMixin.java:912)
	at knot//net.minecraft.server.MinecraftServer.runServer(MinecraftServerMixin.java:697)
	at knot//net.minecraft.server.MinecraftServer.method_29739(MinecraftServerMixin.java:281)
	at java.base@21.0.7/java.lang.Thread.run(Thread.java:1583)


A detailed walkthrough of the error, its code path and all known details is as follows: