I'm attempting to create an explosion in the world when LivingAttackEvent is triggered and certain criteria are met, but, when said criteria are met, the console spams the debug println and subsequently spits out an apparently endless error message that repeats the same few lines. Could someone please explain what's wrong with this?

 

The event (with unrelated parts omitted):

@SubscribeEvent
public void onHit(LivingAttackEvent event)
{
	if(event.entityLiving instanceof EntityPlayer)
	{
		if(event.source.getSourceOfDamage() != null)
		{
			if(event.entityLiving.getCurrentArmor(2) != null)
			{
				if(event.entityLiving.getCurrentArmor(2).getItem() instanceof ItemInlayArmor)
				{
					ItemStack armor = event.entityLiving.getCurrentArmor(2);
					if(armor.hasTagCompound())
					{
						if(armor.getTagCompound().getString("id").equals("minecraft:gunpowder"))
						{
							System.out.println("BANG!");
							event.entityLiving.worldObj.createExplosion(event.source.getSourceOfDamage(), event.source.getSourceOfDamage().posX, event.source.getSourceOfDamage().posY, event.source.getSourceOfDamage().posZ, 1F, true);
						}

One section of the repeating error:

at com.ferret.relics.handlers.RelicEventHandler.onHit(RelicEventHandler.java:120) ~[RelicEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_11_RelicEventHandler_onHit_LivingAttackEvent.invoke(.dynamic) ~[?:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55) ~[ASMEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[EventBus.class:?]
at net.minecraftforge.common.ForgeHooks.onLivingAttack(ForgeHooks.java:341) ~[ForgeHooks.class:?]
at net.minecraft.entity.player.EntityPlayer.attackEntityFrom(EntityPlayer.java:1125) ~[EntityPlayer.class:?]
at net.minecraft.entity.player.EntityPlayerMP.attackEntityFrom(EntityPlayerMP.java:594) ~[EntityPlayerMP.class:?]
at net.minecraft.world.Explosion.doExplosionA(Explosion.java:166) ~[Explosion.class:?]
at net.minecraft.world.WorldServer.newExplosion(WorldServer.java:1087) ~[WorldServer.class:?]
at net.minecraft.world.World.createExplosion(World.java:2362) ~[World.class:?]
at com.ferret.relics.handlers.RelicEventHandler.onHit(RelicEventHandler.java:120) ~[RelicEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler_11_RelicEventHandler_onHit_LivingAttackEvent.invoke(.dynamic) ~[?:?]
at net.minecraftforge.fml.common.eventhandler.ASMEventHandler.invoke(ASMEventHandler.java:55) ~[ASMEventHandler.class:?]
at net.minecraftforge.fml.common.eventhandler.EventBus.post(EventBus.java:138) ~[EventBus.class:?]
at net.minecraftforge.common.ForgeHooks.onLivingAttack(ForgeHooks.java:341) ~[ForgeHooks.class:?]
at net.minecraft.entity.player.EntityPlayer.attackEntityFrom(EntityPlayer.java:1125) ~[EntityPlayer.class:?]
at net.minecraft.entity.player.EntityPlayerMP.attackEntityFrom(EntityPlayerMP.java:594) ~[EntityPlayerMP.class:?]
at net.minecraft.world.Explosion.doExplosionA(Explosion.java:166) ~[Explosion.class:?]
at net.minecraft.world.WorldServer.newExplosion(WorldServer.java:1087) ~[WorldServer.class:?]
at net.minecraft.world.World.createExplosion(World.java:2362) ~[World.class:?]

I am not sure, but it might be that an explosion triggers LivingAttackEvent.. so in your condition you might want to check if the source is an explosion and if it is do nothing