Плагин firstjoinplus

Здравствуйте, помогите пожалуйста исправить ошибку.
Вот ошибка.

Код:

[SEVERE] Could not pass event FirstJoinEvent to FirstJoinPlus v1.8.2
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:427)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
    at me.chaseoes.firstjoinplus.PlayerListeners.firstJoinDetection(PlayerListeners.java:30)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:477)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:462)
    at net.minecraft.server.v1_5_R2.PlayerList.c(PlayerList.java:204)
    at net.minecraft.server.v1_5_R2.PlayerList.a(PlayerList.java:100)
    at net.minecraft.server.v1_5_R2.PendingConnection.d(PendingConnection.java:129)
    at net.minecraft.server.v1_5_R2.PendingConnection.c(PendingConnection.java:44)
    at net.minecraft.server.v1_5_R2.DedicatedServerConnectionThread.a(DedicatedServerConnectionThread.java:41)
    at net.minecraft.server.v1_5_R2.DedicatedServerConnection.b(SourceFile:29)
    at net.minecraft.server.v1_5_R2.MinecraftServer.r(MinecraftServer.java:580)
    at net.minecraft.server.v1_5_R2.DedicatedServer.r(DedicatedServer.java:225)
    at net.minecraft.server.v1_5_R2.MinecraftServer.q(MinecraftServer.java:476)
    at net.minecraft.server.v1_5_R2.MinecraftServer.run(MinecraftServer.java:409)
    at net.minecraft.server.v1_5_R2.ThreadServerApplication.run(SourceFile:573)
Caused by: java.lang.NullPointerException
    at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:64)
    at org.bukkit.inventory.ItemStack.<init>(ItemStack.java:44)
    at me.chaseoes.firstjoinplus.utilities.Utilities.giveFirstJoinItems(Utilities.java:68)
    at me.chaseoes.firstjoinplus.FirstJoinListener.onFirstJoin(FirstJoinListener.java:38)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
    ... 23 more