lwc error

15.01 22:31:13 [Multicraft] Skipped 29 lines due to rate limit (30/s)
15.01 22:31:08 [Server] WARN Caused by: com.griefcraft.scripting.ModuleException: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
15.01 22:31:08 [Server] WARN ... 20 more
15.01 22:31:08 [Server] WARN at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:334)
15.01 22:31:08 [Server] WARN at com.griefcraft.modules.create.CreateModule.onBlockInteract(CreateModule.java:116)
15.01 22:31:08 [Server] WARN at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:358)
15.01 22:31:08 [Server] WARN Caused by: com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.4.0 (b881)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.ThreadServerApplication.run(SourceFile:617)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.run(MinecraftServer.java:457)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.t(MinecraftServer.java:545)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.DedicatedServer.u(DedicatedServer.java:250)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.MinecraftServer.u(MinecraftServer.java:655)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.ServerConnection.c(SourceFile:134)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.NetworkManager.a(NetworkManager.java:146)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.PacketPlayInBlockDig.handle(SourceFile:8)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.PacketPlayInBlockDig.a(SourceFile:53)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.PlayerConnection.a(PlayerConnection.java:535)
15.01 22:31:08 [Server] WARN at net.minecraft.server.v1_7_R1.PlayerInteractManager.dig(PlayerInteractManager.java:103)
15.01 22:31:08 [Server] WARN at org.bukkit.craftbukkit.v1_7_R1.event.CraftEventFactory.callPlayerInteractEvent(CraftEventFactory.java:191)
15.01 22:31:08 [Server] WARN at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:466)
15.01 22:31:08 [Server] WARN at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:481)
15.01 22:31:08 [Server] WARN at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62)
15.01 22:31:08 [Server] WARN at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:425)
15.01 22:31:08 [Server] WARN at java.lang.reflect.Method.invoke(Method.java:606)
15.01 22:31:08 [Server] WARN at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
15.01 22:31:08 [Server] WARN at sun.reflect.GeneratedMethodAccessor68.invoke(Unknown Source)
15.01 22:31:08 [Server] WARN at com.griefcraft.listeners.LWCPlayerListener.onPlayerInteract(LWCPlayerListener.java:253)
15.01 22:31:08 [Server] WARN at com.griefcraft.scripting.ModuleLoader.dispatchEvent(ModuleLoader.java:358)
15.01 22:31:08 [Server] WARN com.griefcraft.scripting.ModuleException: LWC Module threw an uncaught exception! LWC version: 4.4.0 (b881)