[12:22:16] [main/INFO] [STDOUT]: [halestormxv.gui.handlers.GeneralGuiHandler:getClientGuiElement:82]: Client: Opened the Runeblade Inventory
[12:22:16] [Server thread/INFO] [STDOUT]: [halestormxv.gui.handlers.GeneralGuiHandler:getServerGuiElement:53]: Server: Opened the Runeblade Container
[12:22:16] [Server thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
	at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_131]
	at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_131]
	at net.minecraft.util.Util.runTask(Util.java:54) [Util.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:796) [MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741) [MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192) [IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
Caused by: java.lang.NullPointerException
	at net.minecraftforge.items.SlotItemHandler.getStack(SlotItemHandler.java:79) ~[SlotItemHandler.class:?]
	at net.minecraft.inventory.Container.getInventory(Container.java:75) ~[Container.class:?]
	at net.minecraft.inventory.Container.addListener(Container.java:61) ~[Container.class:?]
	at net.minecraftforge.fml.common.network.internal.FMLNetworkHandler.openGui(FMLNetworkHandler.java:101) ~[FMLNetworkHandler.class:?]
	at net.minecraft.entity.player.EntityPlayer.openGui(EntityPlayer.java:2809) ~[EntityPlayer.class:?]
	at halestormxv.objects.items.ItemRuneBlade.onItemRightClick(ItemRuneBlade.java:66) ~[ItemRuneBlade.class:?]
	at net.minecraft.item.ItemStack.useItemRightClick(ItemStack.java:234) ~[ItemStack.class:?]
	at net.minecraft.server.management.PlayerInteractionManager.processRightClick(PlayerInteractionManager.java:384) ~[PlayerInteractionManager.class:?]
	at net.minecraft.network.NetHandlerPlayServer.processTryUseItem(NetHandlerPlayServer.java:794) ~[NetHandlerPlayServer.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItem.processPacket(CPacketPlayerTryUseItem.java:43) ~[CPacketPlayerTryUseItem.class:?]
	at net.minecraft.network.play.client.CPacketPlayerTryUseItem.processPacket(CPacketPlayerTryUseItem.java:9) ~[CPacketPlayerTryUseItem.class:?]
	at net.minecraft.network.PacketThreadUtil$1.run(PacketThreadUtil.java:21) ~[PacketThreadUtil$1.class:?]
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_131]
	at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_131]
	at net.minecraft.util.Util.runTask(Util.java:53) ~[Util.class:?]
	... 5 more
[12:22:16] [Server thread/ERROR]: Encountered an unexpected exception
net.minecraft.util.ReportedException: Ticking player
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:846) ~[MinecraftServer.class:?]
	at net.minecraft.server.MinecraftServer.tick(MinecraftServer.java:741) ~[MinecraftServer.class:?]
	at net.minecraft.server.integrated.IntegratedServer.tick(IntegratedServer.java:192) ~[IntegratedServer.class:?]
	at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:590) [MinecraftServer.class:?]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_131]
Caused by: java.lang.NullPointerException
	at net.minecraftforge.items.SlotItemHandler.getStack(SlotItemHandler.java:79) ~[SlotItemHandler.class:?]
	at net.minecraft.inventory.Container.detectAndSendChanges(Container.java:97) ~[Container.class:?]
	at net.minecraft.entity.player.EntityPlayerMP.onUpdate(EntityPlayerMP.java:365) ~[EntityPlayerMP.class:?]
	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:2168) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntityWithOptionalForce(WorldServer.java:871) ~[WorldServer.class:?]
	at net.minecraft.world.World.updateEntity(World.java:2127) ~[World.class:?]
	at net.minecraft.world.WorldServer.tickPlayers(WorldServer.java:672) ~[WorldServer.class:?]
	at net.minecraft.world.World.updateEntities(World.java:1903) ~[World.class:?]
	at net.minecraft.world.WorldServer.updateEntities(WorldServer.java:643) ~[WorldServer.class:?]
	at net.minecraft.server.MinecraftServer.updateTimeLightAndEntities(MinecraftServer.java:840) ~[MinecraftServer.class:?]
	... 4 more
[12:22:17] [Server thread/ERROR]: This crash report has been saved to: F:\Java Development\Minecraft Modding\Mods 1.12.2\runic_sorcery\run\.\crash-reports\crash-2018-03-21_12.22.17-server.txt
[12:22:17] [Server thread/INFO]: Stopping server
[12:22:17] [Server thread/INFO]: Saving players