SERVER log

server.log

[23:40:19] [Server thread/INFO]: MadDachshund has made the advancement [Isn't It Iron Pick]
[23:40:19] [Server thread/ERROR] [FML]: Exception caught during firing event net.minecraftforge.event.entity.player.AdvancementEvent@67b60648:
java.lang.NoSuchMethodError: net.minecraft.advancements.DisplayInfo.func_192298_b()Lnet/minecraft/item/ItemStack;
        at com.legacy.aether.player.AetherAdvancementHandler.onAchievementGet(AetherAdvancementHandler.java:23) ~[AetherAdvancementHandler.class:?]
        at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1443_AetherAdvancementHandler_onAchievementGet_AdvancementEvent.invoke(.dynamic) ~[?:?]
        at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) ~[ASMEventHandler.class:?]
        at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179) [EventBus.class:?]
        at net.minecraftforge.common.ForgeHooks.onAdvancement(ForgeHooks.java:1387) [ForgeHooks.class:?]
        at net.minecraft.advancements.PlayerAdvancements.func_192750_a(PlayerAdvancements.java:221) [np.class:?]
        at net.minecraft.advancements.ICriterionTrigger$Listener.func_192159_a(SourceFile:31) [p$a.class:?]
        at net.minecraft.advancements.critereon.InventoryChangeTrigger$Listeners.func_192486_a(SourceFile:158) [al$a.class:?]
        at net.minecraft.advancements.critereon.InventoryChangeTrigger.func_192208_a(SourceFile:69) [al.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71111_a(EntityPlayerMP.java:972) [oq.class:?]
        at net.minecraft.inventory.Container.func_75142_b(Container.java:91) [afr.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71001_a(EntityPlayerMP.java:732) [oq.class:?]
        at net.minecraft.entity.item.EntityItem.func_70100_b_(EntityItem.java:407) [acl.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_71044_o(EntityPlayer.java:600) [aed.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:571) [aed.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2170) [vp.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:234) [aed.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:382) [oq.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_73660_a(NetHandlerPlayServer.java:173) [pa.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:209) [NetworkDispatcher$1.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:285) [gw.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [oz.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:788) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
[23:40:19] [Server thread/ERROR] [FML]: Index: 1 Listeners:
[23:40:19] [Server thread/ERROR] [FML]: 0: NORMAL
[23:40:19] [Server thread/ERROR] [FML]: 1: ASM: com.legacy.aether.player.AetherAdvancementHandler@7fcad8de onAchievementGet(Lnet/minecraftforge/event/entity/player/AdvancementEvent;)V
[23:40:19] [Server thread/ERROR] [FML]: 2: ASM: mob_grinding_utils.events.ChickenFuseEvent@589959ec startChickenFuse(Lnet/minecraftforge/event/entity/living/LivingEvent;)V
[23:40:19] [Server thread/WARN]: Failed to handle packet for /174.53.149.90:53776
net.minecraft.util.ReportedException: Ticking player
        at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:459) ~[oq.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_73660_a(NetHandlerPlayServer.java:173) ~[pa.class:?]
        at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:209) ~[NetworkDispatcher$1.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:285) ~[gw.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [oz.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:788) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:396) [nz.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:666) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:524) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:748) [?:1.8.0_151]
Caused by: java.lang.NoSuchMethodError: net.minecraft.advancements.DisplayInfo.func_192298_b()Lnet/minecraft/item/ItemStack;
        at com.legacy.aether.player.AetherAdvancementHandler.onAchievementGet(AetherAdvancementHandler.java:23) ~[AetherAdvancementHandler.class:?]
        at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_1443_AetherAdvancementHandler_onAchievementGet_AdvancementEvent.invoke(.dynamic) ~[?:?]
        at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:90) ~[ASMEventHandler.class:?]
        at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:179) ~[EventBus.class:?]
        at net.minecraftforge.common.ForgeHooks.onAdvancement(ForgeHooks.java:1387) ~[ForgeHooks.class:?]
        at net.minecraft.advancements.PlayerAdvancements.func_192750_a(PlayerAdvancements.java:221) ~[np.class:?]
        at net.minecraft.advancements.ICriterionTrigger$Listener.func_192159_a(SourceFile:31) ~[p$a.class:?]
        at net.minecraft.advancements.critereon.InventoryChangeTrigger$Listeners.func_192486_a(SourceFile:158) ~[al$a.class:?]
        at net.minecraft.advancements.critereon.InventoryChangeTrigger.func_192208_a(SourceFile:69) ~[al.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71111_a(EntityPlayerMP.java:972) ~[oq.class:?]
        at net.minecraft.inventory.Container.func_75142_b(Container.java:91) ~[afr.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71001_a(EntityPlayerMP.java:732) ~[oq.class:?]
        at net.minecraft.entity.item.EntityItem.func_70100_b_(EntityItem.java:407) ~[acl.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_71044_o(EntityPlayer.java:600) ~[aed.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:571) ~[aed.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2170) ~[vp.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:234) ~[aed.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:382) ~[oq.class:?]
        ... 9 more
[23:40:19] [Server thread/INFO]: MadDachshund lost connection: Internal server error
[23:40:19] [Server thread/INFO]: MadDachshund left the game