[09:56:07] [Async Chat Thread - #21/ERROR]: Could not pass event AsyncPlayerChatEvent to WorldChat v0.3
org.bukkit.event.EventException
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:320) ~[spigot.jar:git-Spigot-1339]
	at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-1339]
	at org.bukkit.plugin.TimedRegisteredListener.callEvent(TimedRegisteredListener.java:35) ~[spigot.jar:git-Spigot-1339]
	at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-1339]
	at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:469) [spigot.jar:git-Spigot-1339]
	at net.minecraft.server.v1_7_R1.PlayerConnection.chat(PlayerConnection.java:903) [spigot.jar:git-Spigot-1339]
	at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:843) [spigot.jar:git-Spigot-1339]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat.a(PacketPlayInChat.java:28) [spigot.jar:git-Spigot-1339]
	at net.minecraft.server.v1_7_R1.PacketPlayInChat$1.run(PacketPlayInChat.java:59) [spigot.jar:git-Spigot-1339]
	at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.7.0_51]
	at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.7.0_51]
	at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [?:1.7.0_51]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [?:1.7.0_51]
	at java.lang.Thread.run(Unknown Source) [?:1.7.0_51]
Caused by: java.util.ConcurrentModificationException
	at java.util.ArrayList$Itr.checkForComodification(Unknown Source) ~[?:1.7.0_51]
	at java.util.ArrayList$Itr.next(Unknown Source) ~[?:1.7.0_51]
	at org.bukkit.craftbukkit.v1_7_R1.CraftWorld.getPlayers(CraftWorld.java:652) ~[spigot.jar:git-Spigot-1339]
	at com.yoshigenius.plugins.worldchat.WorldChat.onChat(WorldChat.java:70) ~[?:?]
	at sun.reflect.GeneratedMethodAccessor162.invoke(Unknown Source) ~[?:?]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[?:1.7.0_51]
	at java.lang.reflect.Method.invoke(Unknown Source) ~[?:1.7.0_51]
	at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:318) ~[spigot.jar:git-Spigot-1339]
	... 13 more