Помогите Ошиька bukkit

подскажите, что за ошибка?

Код:

org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:303)
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:459)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:209)
    at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:99)
    at net.minecraft.server.Packet10Flying.handle(SourceFile:126)
    at net.minecraft.server.NetworkManager.b(NetworkManager.java:229)
    at net.minecraft.server.NetServerHandler.a(NetServerHandler.java:113)
    at net.minecraft.serverhook.NetServerHandlerProxy.a(NetServerHandlerProxy.java:83)
    at net.minecraft.server.NetworkListenThread.a(NetworkListenThread.java:78)
    at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:558)
    at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:450)
    at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)
Caused by: java.lang.NoSuchMethodError: org.bukkit.entity.Player.getVehicle()Lorg/bukkit/entity/Vehicle;
    at com.sk89q.worldguard.bukkit.WorldGuardPlayerListener$PlayerMoveHandler.onPlayerMove(WorldGuardPlayerListener.java:113)
    at sun.reflect.GeneratedMethodAccessor28.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:301)
    ... 12 more