Information

Minecraft version: 1.18.2
Modloader: Fabric
Fabric loader version: 0.14.12
Environment: Singleplayer / Multiplayer

First mod name: RandomMobEffects
First mod version: 2.4

Second mod name: Minecells
Second mod version: 0.3.0

Description

RandomMobEffects spawns mobs with the mincells potion effect protected, which makes them unkillable. Might be unintentional to not have it disabled by default.

This might help others with the same issue

Fixed by manually disabling the effect minecells:protected in the config/randommobeffects/blacklist.txt