[15:29:27] [Server thread/WARN]: Failed to handle packet for /47.54.233.65:60476
java.lang.IndexOutOfBoundsException: Index: 50, Size: 45
	at java.util.ArrayList.rangeCheck(ArrayList.java:635) ~[?:1.7.0_51]
	at java.util.ArrayList.get(ArrayList.java:411) ~[?:1.7.0_51]
	at net.minecraft.server.v1_7_R4.Container.getSlot(Container.java:105) ~[spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.PlayerConnection.a(PlayerConnection.java:1472) ~[spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.a(SourceFile:32) ~[spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.PacketPlayInWindowClick.handle(SourceFile:10) ~[spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.NetworkManager.a(NetworkManager.java:184) ~[spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.ServerConnection.c(ServerConnection.java:81) [spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.MinecraftServer.v(MinecraftServer.java:731) [spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.DedicatedServer.v(DedicatedServer.java:289) [spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.MinecraftServer.u(MinecraftServer.java:584) [spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.MinecraftServer.run(MinecraftServer.java:490) [spigot.jar:git-Spigot-1552]
	at net.minecraft.server.v1_7_R4.ThreadServerApplication.run(SourceFile:628) [spigot.jar:git-Spigot-1552]
[15:29:27] [Server thread/INFO]: WillyMan16 lost connection: Internal server error
[15:29:27] [Server thread/INFO]: WillyMan16 left the game.