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java.lang.NullPointerException: Firing Wurst event	at tk.wurst_client.utils.EntityUtils.isCorrectEntity(EntityUtils.java:135)	at tk.wurst_client.utils.EntityUtils.getClosestEntity(EntityUtils.java:208)	at tk.wurst_client.mods.KillauraMod.onUpdate(KillauraMod.java:90)	at tk.wurst_client.events.UpdateEvent.fire(UpdateEvent.java:22)	at tk.wurst_client.events.EventManager.fire(EventManager.java:47)	at net.minecraft.client.entity.EntityPlayerSP.onUpdate(EntityPlayerSP.java:230)	at net.minecraft.world.World.updateEntityWithOptionalForce(World.java:1970)	at net.minecraft.world.World.updateEntity(World.java:1940)	at net.minecraft.world.World.updateEntities(World.java:1790)	at net.minecraft.client.Minecraft.runTick(Minecraft.java:1887)	at net.minecraft.client.Minecraft.runGameLoop(Minecraft.java:1113)	at net.minecraft.client.Minecraft.run(Minecraft.java:403)	at net.minecraft.client.main.Main.main(Main.java:120)