[18:58:33] [Server thread/ERROR]: Could not pass event InventoryClickEvent to Administration_Panel v1.0.0
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:294) ~[spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:30) ~[spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.PlayerConnection.a(PlayerConnection.java:1417) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.a(SourceFile:32) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.PacketPlayInWindowClick.handle(SourceFile:10) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.NetworkManager.a(NetworkManager.java:180) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.ServerConnection.c(ServerConnection.java:81) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.v(MinecraftServer.java:720) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.DedicatedServer.v(DedicatedServer.java:283) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.u(MinecraftServer.java:583) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.MinecraftServer.run(MinecraftServer.java:489) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	at net.minecraft.server.v1_7_R3.ThreadServerApplication.run(SourceFile:628) [spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
Caused by: java.lang.NullPointerException
	at net.lionhard.administrationpanel.guis.PlayerSelector.onInventoryClick(PlayerSelector.java:61) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor170.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_05]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_05]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:292) ~[spigot-1.7.9-R0.2-SNAPSHOT.jar:git-Spigot-1486]
	... 14 more