I tried to make it so that my treasure sword drops more exp than normal. The exp part works but when I die minecraft crashes.

 

Code that gives errors

    @SubscribeEvent
    public void onEXPCalc (LivingExperienceDropEvent event) 
    {
    	if (event.getAttackingPlayer().getHeldItemMainhand().getItem() == ItemInit.SWORD_TREASURE)
    	{
            event.setDroppedExperience(1000);
    	}
    }

 

 

crash report 

crashreport1.txt

When the player dies, they drop exp.

If the player dies from any damage source that was not caused by another player...event.getAttackingPlayer() is null.

I mean, honestly. NPEs are trivial.

How do I make it not null?

And how do I do that?