[02:07:34] [Server thread/ERROR]: Could not pass event AfterRaceSelectedEvent to RacesAndClasses v1.2.1
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:305) ~[spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-550ebac-7019900]
	at de.tobiyas.racesandclasses.RacesAndClasses.fireEventToBukkit(RacesAndClasses.java:543) [RacesAndClasses.jar:?]
	at de.tobiyas.racesandclasses.datacontainer.traitholdercontainer.AbstractHolderManager.addPlayerToHolder(AbstractHolderManager.java:223) [RacesAndClasses.jar:?]
	at de.tobiyas.racesandclasses.datacontainer.traitholdercontainer.race.RaceManager.addPlayerToHolder(RaceManager.java:121) [RacesAndClasses.jar:?]
	at de.tobiyas.racesandclasses.datacontainer.traitholdercontainer.race.RaceManager.changePlayerHolder(RaceManager.java:115) [RacesAndClasses.jar:?]
	at de.tobiyas.racesandclasses.listeners.holderchangegui.HolderChangeListenerGui.playerSelectsHolder(HolderChangeListenerGui.java:202) [RacesAndClasses.jar:?]
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_77]
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_77]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.8.0_77]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.8.0_77]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:301) [spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) [spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-550ebac-7019900]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.PlayerConnection.a(PlayerConnection.java:1588) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:31) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.PacketPlayInWindowClick.a(SourceFile:9) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.PacketHandleTask.run(SourceFile:13) [spigot.jar:git-Spigot-550ebac-7019900]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_77]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_77]
	at net.minecraft.server.v1_8_R1.MinecraftServer.z(MinecraftServer.java:696) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.DedicatedServer.z(DedicatedServer.java:316) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.MinecraftServer.y(MinecraftServer.java:634) [spigot.jar:git-Spigot-550ebac-7019900]
	at net.minecraft.server.v1_8_R1.MinecraftServer.run(MinecraftServer.java:537) [spigot.jar:git-Spigot-550ebac-7019900]
	at java.lang.Thread.run(Unknown Source) [?:1.8.0_77]
Caused by: java.lang.NullPointerException