Essentials Error

03:03:30 [INFO] [Essentials] Enabling Essentials v2.9.2
03:03:30 [WARNING] [Essentials] "Essentials v2.9.2" has registered a listener fo
r org.bukkit.event.player.PlayerChatEvent on method "public void com.earth2me.es
sentials.EssentialsPlayerListener.onPlayerChat(org.bukkit.event.player.PlayerCha
tEvent)", but the event is Deprecated. Server performance will be affected; plea
se notify the authors [Zenexer, ementalo, Aelux, Brettflan, KimKandor, snowleo,
ceulemans, Xeology, KHobbits, md_5, Iaccidentally].
org.bukkit.plugin.AuthorNagException
        at org.bukkit.plugin.java.JavaPluginLoader.createRegisteredListeners(Jav
aPluginLoader.java:302)
        at org.bukkit.plugin.SimplePluginManager.registerEvents(SimplePluginMana
ger.java:507)
        at com.earth2me.essentials.Essentials.onEnable(Essentials.java:217)
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:217)
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader
.java:357)
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManage
r.java:381)
        at org.bukkit.craftbukkit.CraftServer.loadPlugin(CraftServer.java:263)
        at org.bukkit.craftbukkit.CraftServer.enablePlugins(CraftServer.java:245
)
        at net.minecraft.server.MinecraftServer.i(MinecraftServer.java:296)
        at net.minecraft.server.MinecraftServer.d(MinecraftServer.java:275)
        at net.minecraft.server.MinecraftServer.a(MinecraftServer.java:225)
        at net.minecraft.server.DedicatedServer.init(DedicatedServer.java:140)
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:380)
        at net.minecraft.server.ThreadServerApplication.run(SourceFile:539)