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java.lang.UnsupportedOperationException at java.util.AbstractList.remove(Unknown Source)[?:1.8.0_101] at java.util.AbstractList$Itr.remove(Unknown Source)[?:1.8.0_101] at org.spongepowered.api.event.entity.AffectEntityEvent.filterEntities(AffectEntityEvent.java:101)[AffectEntityEvent.class:1.10.2-2052-5.0.0-BETA-1679] at me.ryanhamshire.griefprevention.event.EntityEventHandler.onEntitySpawn(EntityEventHandler.java:175)[EntityEventHandler.class:?] at org.spongepowered.common.event.listener.SpawnEntityEventListener_EntityEventHandler_onEntitySpawn161.handle(Unknown Source)[?:?] at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95)[RegisteredListener.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:349)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:332)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:377)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:362)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:138)[SpongeImpl.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.event.tracking.phase.TrackingPhase.spawnEntityOrCapture(TrackingPhase.java:290)[TrackingPhase.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.event.tracking.CauseTracker.spawnEntity(CauseTracker.java:497)[CauseTracker.class:1.10.2-2052-5.0.0-BETA-1679] at net.minecraft.world.WorldServer.func_72838_d(WorldServer.java:983)[ls.class:?] at lellson.roughMobs.events.ZombieEvents.setHorse(ZombieEvents.java:177)[ZombieEvents.class:?] at lellson.roughMobs.events.ZombieEvents.onWorldJoin(ZombieEvents.java:161)[ZombieEvents.class:?] at lellson.roughMobs.events.ZombieEvents.onWorldJoin(ZombieEvents.java:33)[ZombieEvents.class:?] at lellson.roughMobs.events.DefaultEvents.eventJoinWorld(DefaultEvents.java:85)[DefaultEvents.class:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_75_DefaultEvents_eventJoinWorld_EntityJoinWorldEvent.invoke(.dynamic)[?:?] at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:72)[ASMEventHandler.class:?] at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:131)[EventBus.class:?] at org.spongepowered.mod.event.SpongeForgeEventFactory.callEntityJoinWorldEvent(SpongeForgeEventFactory.java:979)[SpongeForgeEventFactory.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeForgeEventFactory.callForgeEvent(SpongeForgeEventFactory.java:425)[SpongeForgeEventFactory.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:325)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:377)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:362)[SpongeModEventManager.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:138)[SpongeImpl.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.event.tracking.phase.GenerationPhase$GeneralGenerationPhaseState.unwind(GenerationPhase.java:167)[GenerationPhase$GeneralGenerationPhaseState.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.event.tracking.phase.GenerationPhase.unwind(GenerationPhase.java:239)[GenerationPhase.class:1.10.2-2052-5.0.0-BETA-1679] at org.spongepowered.common.event.tracking.CauseTracker.completePhase(CauseTracker.java:185)[CauseTracker.class:1.10.2-2052-5.0.0-BETA-1679] at net.minecraft.world.WorldEntitySpawner.handler$onFindChunksForSpawningReturn$0(WorldEntitySpawner.java:115)[aik.class:?] at net.minecraft.world.WorldEntitySpawner.func_77192_a(WorldEntitySpawner.java:183)[aik.class:?] at net.minecraft.world.WorldServer.func_72835_b(WorldServer.java:198)[ls.class:?] at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:698)[MinecraftServer.class:?] at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387)[ld.class:?] at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613)[MinecraftServer.class:?] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471)[MinecraftServer.class:?] at java.lang.Thread.run(Unknown Source)[?:1.8.0_101]