Problem/Bug Worldguard error

i use server.pro host and 2GB
when im using a /wild plugin and running this command server auto closing and i get this error on console
Could u please help me?

Code:

[20:29:54 ERROR]: Could not pass event EntityChangeBlockEvent to WorldGuard v6.2.2-SNAPSHOT;8eeab68 org.bukkit.event.EventException     at [/COLOR]org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:310) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:682) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:676) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at org.bukkit.craftbukkit.v1_8_R3.event.CraftEventFactory.callEntityChangeBlockEvent(CraftEventFactory.java:672) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.EntityFallingBlock.t_(EntityFallingBlock.java:61) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.World.entityJoinedWorld(World.java:1607) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.World.g(World.java:1582) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.World.tickEntities(World.java:1425) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.WorldServer.tickEntities(WorldServer.java:597) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.MinecraftServer.B(MinecraftServer.java:786) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.DedicatedServer.B(DedicatedServer.java:374) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.MinecraftServer.A(MinecraftServer.java:654) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at net.minecraft.server.v1_8_R3.MinecraftServer.run(MinecraftServer.java:557) [spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     at java.lang.Thread.run(Thread.java:748) [?:1.8.0_172] Caused by: java.lang.NoClassDefFoundError: Could not initialize class com.sk89q.worldguard.bukkit.util.Materials     at com.sk89q.worldguard.bukkit.listener.EventAbstractionListener.onEntityChangeBlock(EventAbstractionListener.java:222) ~[?:?]     at sun.reflect.GeneratedMethodAccessor112.invoke(Unknown Source) ~[?:?]     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_172]     at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_172]     at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot-1.8.8.jar:git-Spigot-21fe707-e1ebe52]     ... 16 more

 

okey i fixed it...i had wrong version of worldguard ^_^


now i have a new problem :3
it spamming hard on cosnole this but i already use this plugin

[03:41:16 WARN]: [MVdWPlaceholderAPI] Put one of Maximvdw's premium placeholder plugins in the server! [03:41:16 WARN]: [MVdWPlaceholderAPI] There is no MVdW placeholder plugin installed!

 

hmm okey sry im too late my friend fixed it i think it was cuz i had 2 of those plugins