[15:28:00] [Server thread/ERROR] [Sponge]: Could not pass InteractBlockEvent$Secondary$MainHand$Impl to Plugin{id=esiniacore, name=Esinia Core, version=1.0, authors=[Ghaz-ranka, pie_flavor, Kanelives, Kodiacbear], source=C:\Users\Ghaz\Desktop\Minecraft\Minecraft Server 1.11\mods\Esinia Server Core.jar}
java.lang.NullPointerException
        at zorg.esinia.server.anvils.AnvilStone.onRightClickMainHand(AnvilStone.java:75) ~[AnvilStone.class:?]
        at org.spongepowered.common.event.listener.MainHandListener_AnvilStone_onRightClickMainHand26.handle(Unknown Source) ~[?:?]
        at org.spongepowered.common.event.RegisteredListener.handle(RegisteredListener.java:95) ~[RegisteredListener.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:314) ~[SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:296) ~[SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:341) ~[SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.mod.event.SpongeModEventManager.post(SpongeModEventManager.java:329) ~[SpongeModEventManager.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.SpongeImpl.postEvent(SpongeImpl.java:192) ~[SpongeImpl.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.event.SpongeCommonEventFactory.callInteractBlockEventSecondary(SpongeCommonEventFactory.java:472) ~[SpongeCommonEventFactory.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.event.SpongeCommonEventFactory.callInteractBlockEventSecondary(SpongeCommonEventFactory.java:462) ~[SpongeCommonEventFactory.class:1.11.2-2282-6.1.0-BETA-2338]
        at net.minecraft.server.management.PlayerInteractionManager.func_187251_a(PlayerInteractionManager.java:1181) ~[lz.class:?]
        at net.minecraft.network.NetHandlerPlayServer.redirect$onProcessRightClickBlock$zgo000(NetHandlerPlayServer.java:2298) ~[mi.class:?]
        at net.minecraft.network.NetHandlerPlayServer.func_184337_a(NetHandlerPlayServer.java:685) ~[mi.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:55) ~[jm.class:?]
        at net.minecraft.network.play.client.CPacketPlayerTryUseItemOnBlock.func_148833_a(SourceFile:11) ~[jm.class:?]
        at org.spongepowered.common.network.PacketUtil.lambda$onProcessPacket$0(PacketUtil.java:153) ~[PacketUtil.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.event.tracking.CauseTracker.switchToPhase(CauseTracker.java:159) [CauseTracker.class:1.11.2-2282-6.1.0-BETA-2338]
        at org.spongepowered.common.network.PacketUtil.onProcessPacket(PacketUtil.java:152) [PacketUtil.class:1.11.2-2282-6.1.0-BETA-2338]
        at net.minecraft.network.PacketThreadUtil$1.redirect$onProcessPacket$zjk000(SourceFile:539) [fo$1.class:?]
        at net.minecraft.network.PacketThreadUtil$1.run(SourceFile:13) [fo$1.class:?]
        at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source) [?:1.8.0_131]
        at java.util.concurrent.FutureTask.run(Unknown Source) [?:1.8.0_131]
        at net.minecraft.util.Util.func_181617_a(SourceFile:46) [h.class:?]
        at org.spongepowered.common.SpongeImplHooks.onUtilRunTask(SpongeImplHooks.java:256) [SpongeImplHooks.class:1.11.2-2282-6.1.0-BETA-2338]
        at net.minecraft.server.MinecraftServer.redirect$onRun$zhj000(MinecraftServer.java:3949) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.func_71190_q(MinecraftServer.java:679) [MinecraftServer.class:?]
        at net.minecraft.server.dedicated.DedicatedServer.func_71190_q(DedicatedServer.java:384) [lh.class:?]
        at net.minecraft.server.MinecraftServer.func_71217_p(MinecraftServer.java:624) [MinecraftServer.class:?]
        at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:482) [MinecraftServer.class:?]
        at java.lang.Thread.run(Unknown Source) [?:1.8.0_131]