my hunger games error

org.bukkit.command.CommandException: Unhandled exception executing command 'hga' in plugin MyHungerGames v0.5.2
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:42)
	at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:166)
	at org.bukkit.craftbukkit.CraftServer.dispatchCommand(CraftServer.java:479)
	at net.minecraft.server.NetServerHandler.handleCommand(NetServerHandler.java:821)
	at net.minecraft.server.NetServerHandler.chat(NetServerHandler.java:781)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:764)
	at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:141)
	at net.minecraft.server.Packet3Chat.handle(Packet3Chat.java:34)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)
	at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:83)
	at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
	at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:567)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:459)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NullPointerException
	at com.randude14.hungergames.ItemConfig.addChestLoot(ItemConfig.java:107)
	at com.randude14.hungergames.commands.admin.add.AddChestLootCommand.handle(AddChestLootCommand.java:36)
	at com.randude14.hungergames.commands.SubCommand.execute(SubCommand.java:33)
	at com.randude14.hungergames.commands.CommandHandler.handleAdminCommand(CommandHandler.java:188)
	at com.randude14.hungergames.commands.CommandHandler.onCommand(CommandHandler.java:32)
	at org.bukkit.command.PluginCommand.execute(PluginCommand.java:40)
	... 14 more