[14:30:54] [Server thread/ERROR] [Sponge]: Could not pass InteractItemEvent$Secondary$MainHand$Impl to Plugin{id=griefprevention, name=GriefPrevention, version=4.0.0, description=This plugin is designed to prevent all forms of grief., url=https://github.com/MinecraftPortCentral/GriefPrevention, source=/opt/msm/servers/rtest/mods/griefprevention-1.10.2-4.0.0.339.jar}
java.lang.NullPointerException
        at me.ryanhamshire.griefprevention.listener.PlayerEventHandler.investigateClaim(PlayerEventHandler.java:2553) ~[PlayerEventHandler.class:1.10.2-4.0.0.339]
        at me.ryanhamshire.griefprevention.listener.PlayerEventHandler.onPlayerInteractItem(PlayerEventHandler.java:1408) ~[PlayerEventHandler.class:1.10.2-4.0.0.339]
        at org.spongepowered.common.event.listener.InteractItemEventListener_PlayerEventHandler_onPlayerInteractItem214.handle(Unknown Source) ~[?:?]
        at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95) ~[RegisteredListener.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:313) [SpongeModEventManager.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:342) [SpongeModEventManager.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:326) [SpongeModEventManager.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:143) [SpongeImpl.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.common.event.SpongeCommonEventFactory.callInteractItemEventSecondary(SpongeCommonEventFactory.java:503) [SpongeCommonEventFactory.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.common.network.PacketUtil.firePreEvents(PacketUtil.java:244) [PacketUtil.class:1.10.2-2281-5.2.0-BETA-2546]
        at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:90) [PacketUtil.class:1.10.2-2281-5.2.0-BETA-2546]
        at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zjj000(SourceFile:539) [fl$1.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [fl$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) [?:1.8.0_72]
        at java.util.concurrent.FutureTask.run(FutureTask.java:266) [?:1.8.0_72]
        at net.minecraft.util.Util.func_181617_a(SourceFile:45) [h.class:?]
        at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:238) [SpongeImplHooks.class:1.10.2-2281-5.2.0-BETA-2546]
        at net.minecraft.server.MinecraftServer.redirect$onRun$zhp000(MinecraftServer.java:3951) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:668) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:387) [ld.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:613) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:471) [MinecraftServer.class:?]
        at java.lang.Thread.run(Thread.java:745) [?:1.8.0_72]