Unholy Aura Bugged?

So I was in the middle of making a recipe system. But I discovered that when I create the item the game has a fatal error.

Then I tried placing the item on the ground. When I retrieved it, it crashed too! So I recalled that I put three auras, Devotion Brilliance and Unholy into it. Upon removing Unholy, it went fine. What could be the reason? I really need a % regeneration aura.
 
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