joe skyblock

[18:06:42] [Server thread/ERROR]: Error occurred while enabling JoeSkyBlock v1.0.0 (Is it up to date?)
java.lang.NullPointerException
	at JoePkg.SkyBlock._PlayerDiary.InitializeDiarySystem(_PlayerDiary.java:37) ~[?:?]
	at JoePkg.SkyBlock.JoeSkyBlock.onEnable(JoeSkyBlock.java:48) ~[?:?]
	at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:218) ~[spigot.jar:git-Spigot-1232]
	at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:457) [spigot.jar:git-Spigot-1232]
	at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:385) [spigot.jar:git-Spigot-1232]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.loadPlugin(CraftServer.java:302) [spigot.jar:git-Spigot-1232]
	at org.bukkit.craftbukkit.v1_7_R1.CraftServer.enablePlugins(CraftServer.java:284) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.MinecraftServer.m(MinecraftServer.java:348) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.MinecraftServer.g(MinecraftServer.java:325) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.MinecraftServer.a(MinecraftServer.java:281) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.DedicatedServer.init(DedicatedServer.java:186) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:430) [spigot.jar:git-Spigot-1232]
	at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot.jar:git-Spigot-1232]