[SEVERE] Could not pass event PlayerQuitEvent to SpoutWallet
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:332)
	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.ServerConfigurationManagerAbstract.disconnect(ServerConfigurationManagerAbstract.java:206)
	at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:711)
	at net.minecraft.server.NetworkManager.b(NetworkManager.java:281)
	at net.minecraft.server.NetServerHandler.d(NetServerHandler.java:109)
	at org.getspout.spout.SpoutNetServerHandler.d(SpoutNetServerHandler.java:173)
	at net.minecraft.server.ServerConnection.b(SourceFile:35)
	at net.minecraft.server.DedicatedServerConnection.b(SourceFile:30)
	at net.minecraft.server.MinecraftServer.q(MinecraftServer.java:581)
	at net.minecraft.server.DedicatedServer.q(DedicatedServer.java:212)
	at net.minecraft.server.MinecraftServer.p(MinecraftServer.java:474)
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:406)
	at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)
Caused by: java.lang.NullPointerException
	at com.github.spice_king.bukkit.spoutwallet.SpoutWallet.removePlayerUpdateTask(SpoutWallet.java:151)
	at com.github.spice_king.bukkit.spoutwallet.listeners.PlayerQuitListener.onPlayerQuit(PlayerQuitListener.java:35)
	at sun.reflect.GeneratedMethodAccessor307.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:330)
	... 15 more