neoforge-21.0.91-beta
https://pastebin.com/s4c8UbVg

I was fighting a Vampirism advanced vampire when the game crashed after he hit me
Entity Type: vampirism:advanced_vampire_imob (de.teamlapen.vampirism.entity.vampire.AdvancedVampireEntity.IMob)
Entity ID: 17100
Entity Name: Crimson Cat

Happened again with just a regular zombie killing me.
https://pastebin.com/E7X7yZAf