Exploding Mobs:
https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/minecraft-mods/2884536-exploding-mobs-mod-a-death-effect-for-vanilla-mobs
Crash report:
https://paste.ubuntu.com/p/nXypBr9GCW/

That one is definitely on their side, tell them to stop doing unchecked casts.

Got it, thanks