LWC Doesn't work on 1.9.4

[TheLightMaster]

Hello i have a server on minecraft and lwc is on it but it doesn't work it says [LWC] internal error. Notify an admin immiediately :PLAYER_INTERACT. I am a owner and i don't get it Please help me with this issue
In the console it says:
[20:05:52 WARN]: com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.4.0 (b881)
[20:05:52 WARN]: at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:358)
[20:05:52 WARN]: at com.griefcraft.listeners.LWCPlayerListener.onPlayerInteract(LWCPlayerListener.java:253)
[20:05:52 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[20:05:52 WARN]: at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
[20:05:52 WARN]: at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
[20:05:52 WARN]: at java.lang.reflect.Method.invoke(Method.java:498)
[20:05:52 WARN]: at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306)
[20:05:52 WARN]: at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
[20:05:52 WARN]: at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502)
[20:05:52 WARN]: at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487)
[20:05:52 WARN]: at org.bukkit.craftbukkit.v1_9_R2.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:231)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.PlayerInteractManager.a(PlayerInteractManager.java:483)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.PlayerConnection.a(PlayerConnection.java:887)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:55)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.PacketPlayInUseItem.a(SourceFile:11)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.PlayerConnectionUtils$1.run(SourceFile:13)
[20:05:52 WARN]: at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[20:05:52 WARN]: at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.SystemUtils.a(SourceFile:45)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.MinecraftServer.D(MinecraftServer.java:726)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.DedicatedServer.D(DedicatedServer.java:399)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.MinecraftServer.C(MinecraftServer.java:665)
[20:05:52 WARN]: at net.minecraft.server.v1_9_R2.MinecraftServer.run(MinecraftServer.java:564)
[20:05:52 WARN]: at java.lang.Thread.run(Thread.java:745)
[20:05:52 WARN]: Caused by: com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.4.0 (b881)
[20:05:52 WARN]: at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:358)
[20:05:52 WARN]: at com.griefcraft.modules.create.CreateModule.onBlockInteract(CreateModule.java:116)
[20:05:52 WARN]: at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:334)
[20:05:52 WARN]: ... 23 more
[20:05:52 WARN]: Caused by: java.lang.NullPointerException
[20:05:52 WARN]: at net.milkbowl.vault.permission.plugins.Permission_GroupManager.getPlayerGroups(Permission_GroupManager.java:313)
[20:05:52 WARN]: at net.milkbowl.vault.permission.Permission.getPlayerGroups(Permission.java:684)
[20:05:52 WARN]: at net.milkbowl.vault.permission.Permission.getPlayerGroups(Permission.java:696)
[20:05:52 WARN]: at com.griefcraft.integration.permissions.VaultPermissions.getGroups(VaultPermissions.java:53)
[20:05:52 WARN]: at com.griefcraft.modules.limits.LimitsV2.getPlayerLimits(LimitsV2.java:431)
[20:05:52 WARN]: at com.griefcraft.modules.limits.LimitsV2.getEffectiveLimit(LimitsV2.java:471)
[20:05:52 WARN]: at com.griefcraft.modules.limits.LimitsV2.hasReachedLimit(LimitsV2.java:331)
[20:05:52 WARN]: at com.griefcraft.modules.limits.LimitsV2.onRegisterProtection(LimitsV2.java:209)
[20:05:52 WARN]: at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:346)
[20:05:52 WARN]: ... 25 more

Is this normal???????

Thx if you reply.