Problem/Bug Minecraft World Guard 1.11

Hey everyone,

(Im from Germany, so sorry for my english)

Since some weeks I run World Guard on my server and everything was fine.
But today I tried to create a new region with /region define [Name] ...
It says 'An error occured ' and that I should look in the console.
I will write here what was written there:

[23:24:37 WARN]: [WorldGuard] WorldGuard encountered an unexpected error
java.lang.NoSuchMethodError: com.google.common.base.Preconditions.checkState(ZLjava/lang/String;Ljava/lang/ObjectV
at com.sk89q.worldguard.internal.guava.util.concurrent.Futures.getDone(Futures.java:1170) ~[worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.Futures$4.run(Futures.java:1121) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.MoreExecutors$DirectExecutor.execute(MoreExecutors.java:435) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.AbstractFuture.executeListener(AbstractFuture.java:900) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.AbstractFuture.addListener(AbstractFuture.java:634) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.AbstractFuture$TrustedFuture.addListener(AbstractFuture.java:98) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.Futures.addCallback(Futures.java:1135) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.internal.guava.util.concurrent.Futures.addCallback(Futures.java:1073) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.bukkit.commands.AsyncCommandHelper.thenRespondWith(AsyncCommandHelper.java:78) [worldguard-6.2.1.jar:?]
at com.sk89q.worldguard.bukkit.commands.region.RegionCommands.define(RegionCommands.java:140) [worldguard-6.2.1.jar:?]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[?:1.8.0_101]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[?:1.8.0_101]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_101]
at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_101]
at com.sk89q.minecraft.util.commands.CommandsManager.invokeMethod(CommandsManager.java:528) [worldedit-bukkit-6.1.7.3.jar:?]
at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:516) [worldedit-bukkit-6.1.7.3.jar:?]
at com.sk89q.minecraft.util.commands.CommandsManager.executeMethod(CommandsManager.java:471) [worldedit-bukkit-6.1.7.3.jar:?]
at com.sk89q.minecraft.util.commands.CommandsManager.execute(CommandsManager.java:409) [worldedit-bukkit-6.1.7.3.jar:?]
at com.sk89q.worldguard.bukkit.WorldGuardPlugin.onCommand(WorldGuardPlugin.java:295) [worldguard-6.2.1.jar:?]
at com.sk89q.bukkit.util.DynamicPluginCommand.execute(DynamicPluginCommand.java:54) [worldedit-bukkit-6.1.7.3.jar:?]
at org.bukkit.command.SimpleCommandMap.dispatch(SimpleCommandMap.java:140) [craftbukkit.jar:git-Bukkit-a951a88]
at org.bukkit.craftbukkit.v1_11_R1.CraftServer.dispatchCommand(CraftServer.java:626) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.PlayerConnection.handleCommand(PlayerConnection.java:1276) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:1136) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(SourceFile:37) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.PacketPlayInChat.a(SourceFile:9) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [craftbukkit.jar:git-Bukkit-a951a88]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_101]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_101]
at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:695) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:360) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:650) [craftbukkit.jar:git-Bukkit-a951a88]
at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:554) [craftbukkit.jar:git-Bukkit-a951a88]
at java.lang.Thread.run(Thread.java:745) [?:1.8.0_101]


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I dont have that much experience so I need your help to find and fix the problem.

Have a nice day!
Max

 

@Loxo
It is missing a dependency.

Are you using the most recent version of WorldGuard? If so, try updating your Java to Java-9.

 

Thank you. Now it's fixed