Bug report of Minecraft modpack

[02:11:44] [Server thread/WARN]: Failed to handle packet for /<here-is-my-ip-address>
net.minecraft.util.ReportedException: Ticking player
at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:380) ~[lu.class:?]
at net.minecraft.network.NetHandlerPlayServer.func_73660_a(NetHandlerPlayServer.java:162) ~[me.class:?]
at net.minecraftforge.fml.common.network.handshake.NetworkDispatcher$1.func_73660_a(NetworkDispatcher.java:213) ~[NetworkDispatcher$1.class:?]
at net.minecraft.network.NetworkManager.func_74428_b(NetworkManager.java:287) ~[eo.class:?]
at net.minecraft.network.NetworkSystem.func_151269_c(NetworkSystem.java:180) [md.class:?]
at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:732) [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(Thread.java:745) [?:1.8.0_101]
Caused by: java.lang.NoSuchMethodError: net.minecraft.entity.player.InventoryPlayer.func_70440_f(I)Lnet/minecraft/item/ItemStack;
at com.kashdeya.tinyprogressions.armor.StoneArmor.onArmorTick(StoneArmor.java:43) ~[StoneArmor.class:?]
at net.minecraft.entity.player.InventoryPlayer.func_70429_k(InventoryPlayer.java:353) ~[zr.class:?]
at net.minecraft.entity.player.EntityPlayer.func_70636_d(EntityPlayer.java:510) ~[zs.class:?]
at net.minecraft.entity.EntityLivingBase.func_70071_h_(EntityLivingBase.java:2013) ~[sf.class:?]
at net.minecraft.entity.player.EntityPlayer.func_70071_h_(EntityPlayer.java:233) ~[zs.class:?]
at net.minecraft.entity.player.EntityPlayerMP.func_71127_g(EntityPlayerMP.java:303) ~[lu.class:?]
... 9 more