server bug

[17:10:38 WARN]: Failed to handle packet for /127.0.0.1:51726
net.minecraft.util.ReportedException: Ticking player
        at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerM
P.java:464) ~[mw.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_147347_a(NetHandlerPl
ayServer.java:496) ~[nh.class:?]
        at net.minecraft.network.play.client.C03PacketPlayer.func_148833_a(C03Pa
cketPlayer.java:36) ~[jd.class:?]
        at net.minecraft.network.play.client.C03PacketPlayer.func_148833_a(C03Pa
cketPlayer.java:101) ~[jd.class:?]
        at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java
:244) ~[ej.class:?]
        at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:
173) [nc.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.jav
a:973) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(Dedicated
Server.java:422) [lt.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.jav
a:803) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:663) [M
inecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.7.0_67]
Caused by: java.lang.NoSuchMethodError: net.minecraft.util.FoodStats.func_75119_
b(F)V
        at com.gudenau.minecraft.cooler.item.ItemCooler.func_77663_a(ItemCooler.
java:197) ~[ItemCooler.class:?]
        at net.minecraft.item.ItemStack.func_77945_a(ItemStack.java:542) ~[add.c
lass:?]
        at net.minecraft.entity.player.InventoryPlayer.func_70429_k(InventoryPla
yer.java:386) ~[yx.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.ja
va:622) ~[yz.class:?]
        at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.
java:1865) ~[sv.class:?]
        at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.j
ava:316) ~[yz.class:?]
        at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerM
P.java:393) ~[mw.class:?]
        ... 10 more
[17:10:38 INFO]: Syncorio lost connection: Internal server error
[17:10:38 INFO]: Syncorio has left us.