Could not pass event InventoryClickEvent to Hub_Essentials v1.2.9
org.bukkit.event.EventException
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot.jar:git-Spigot-1322]
        at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-1322]
        at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[spigot.jar:git-Spigot-1322]
        at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-1322]
        at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:472) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:1391) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.PacketPlayInWindowClick.a(SourceFile:32) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.PacketPlayInWindowClick.handle(SourceFile:10) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:147) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.ServerConnection.c(ServerConnection.java:77) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:700) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:273) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:562) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:469) [spigot.jar:git-Spigot-1322]
        at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617) [spigot.jar:git-Spigot-1322]
Caused by: java.lang.NullPointerException
        at net.mercilessmc.Hub.ServerSelector.menuClick(ServerSelector.java:63) ~[?:?]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.7.0_51]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[?:1.7.0_51]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.7.0_51]
        at java.lang.reflect.Method.invoke(Method.java:606) ~[?:1.7.0_51]
        at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:318) ~[spigot.jar:git-Spigot-1322]
        ... 14 more