Bukkit

Older and current versions of Lootr are inherent incompatible with Bukkit implementations, including CraftBukkit, specifically Mohist, as these add API functions to various container & inventory classes.

The first conflict of getContents was resolved in recent versions of Lootr by renaming our internal API function to getLootrContents.

Unfortunately, Bukkit also defines custom onOpen methods for containers, resulting in similar error messages:

java.lang.AbstractMethodError: Receiver class noobanidus.mods.lootr.data.SpecialChestInventory does not define or inherit an implementation of the resolved method 'abstract void onOpen(org.bukkit.craftbukkit.v1_18_R2.entity.CraftHumanEntity)' of interface net.minecraft.world.Container.

As far as I'm aware, there's nothing Lootr can do to address this.

Magma

The dev of Magma (@JustRed23) has addressed this in their own code-base implementation of Bukkit to retain compatibility with Lootr.

If you wish to use Bukkit-based plug-ins and Mohist or other implementations aren't functioning, I recommend trying Magma.

Relevant issues

• #86
• #217