Possible Fixes

Yes

Modpack Version

ATM 10 - 1.16

What happened?

My base had low aura from mod "nature aura" and when i started with creating infused iron ingot server crushed with folowing -
[Server thread/ERROR] [ne.ne.bu.EventBus/EVENTBUS]: Exception caught during firing event: Unregistered holder in ResourceKey[minecraft:root / minecraft:mob_effect]: Direct{de.ellpeck.naturesaura.potion.PotionBreathless@64ff1e13}

Now my server stuck in crush loop. Seems like reason of crush is chunk loaded.

My guess: something on my base trying to get "Breathless" effect and it leads to crush.

Crash Log

https://gist.github.com/makmanu/9e64fa1e4ac33dc20adb93f619312c63

Latest.Log

No response

Updating nature aura to 41.4 version fixes this crash.