[13:52:12 ERROR]: Could not pass event BlockBreakEvent to SilkSpawners v3.7.4
org.bukkit.event.EventException
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:306) ~[spigot.jar:git-Spigot-f950f8e-a710176]
    at org.bukkit.plugin.RegisteredListener.callEvent(RegisteredListener.java:62) ~[spigot.jar:git-Spigot-f950f8e-a710176]
    at org.bukkit.plugin.SimplePluginManager.fireEvent(SimplePluginManager.java:502) [spigot.jar:git-Spigot-f950f8e-a710176]
    at org.bukkit.plugin.SimplePluginManager.callEvent(SimplePluginManager.java:487) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PlayerInteractManager.breakBlock(PlayerInteractManager.java:291) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PlayerInteractManager.a(PlayerInteractManager.java:218) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PlayerConnection.a(PlayerConnection.java:835) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PacketPlayInBlockDig.a(SourceFile:40) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PacketPlayInBlockDig.a(SourceFile:10) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.PlayerConnectionUtils$1.run(SourceFile:13) [spigot.jar:git-Spigot-f950f8e-a710176]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_91]
    at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_91]
    at net.minecraft.server.v1_11_R1.SystemUtils.a(SourceFile:46) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.MinecraftServer.D(MinecraftServer.java:739) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.DedicatedServer.D(DedicatedServer.java:399) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.MinecraftServer.C(MinecraftServer.java:675) [spigot.jar:git-Spigot-f950f8e-a710176]
    at net.minecraft.server.v1_11_R1.MinecraftServer.run(MinecraftServer.java:574) [spigot.jar:git-Spigot-f950f8e-a710176]
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_91]
Caused by: java.lang.NullPointerException
    at com.sk89q.worldguard.bukkit.WorldConfiguration.getBoolean(WorldConfiguration.java:219) ~[?:?]
    at com.sk89q.worldguard.bukkit.WorldConfiguration.loadConfiguration(WorldConfiguration.java:344) ~[?:?]
    at com.sk89q.worldguard.bukkit.WorldConfiguration.<init>(WorldConfiguration.java:211) ~[?:?]
    at com.sk89q.worldguard.bukkit.ConfigurationManager.get(ConfigurationManager.java:228) ~[?:?]
    at com.sk89q.worldguard.bukkit.WorldGuardPlugin.hasPermission(WorldGuardPlugin.java:508) ~[?:?]
    at com.sk89q.worldguard.protection.GlobalRegionManager.hasBypass(GlobalRegionManager.java:122) ~[?:?]
    at com.sk89q.worldguard.protection.GlobalRegionManager.canBuild(GlobalRegionManager.java:163) ~[?:?]
    at com.sk89q.worldguard.bukkit.WorldGuardPlugin.canBuild(WorldGuardPlugin.java:993) ~[?:?]
    at de.dustplanet.util.SilkUtil.canBuildHere(SilkUtil.java:963) ~[?:?]
    at de.dustplanet.silkspawners.listeners.SilkSpawnersBlockListener.onBlockBreak(SilkSpawnersBlockListener.java:56) ~[?:?]
    at sun.reflect.GeneratedMethodAccessor402.invoke(Unknown Source) ~[?:?]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_91]
    at java.lang.reflect.Method.invoke(Method.java:498) ~[?:1.8.0_91]
    at org.bukkit.plugin.java.JavaPluginLoader$1.execute(JavaPluginLoader.java:302) ~[spigot.jar:git-Spigot-f950f8e-a710176]
    ... 17 more