MMOItems do not drop from Mythic Mobs and throw an error into console

Summary When you apply an mmoitem drop to a mythicmob and kill it, the console throws an error as well as does not give you the drop. Latest free version of mythic mobs

Steps to reproduce

Create a mob, add an mmoitem as a drop, kill a mob.

Current behavior

The mythic mob works fine, but the drops do not

Intended correct behavior

The mythic mob should drop the mmoitem based on the chance it has set

Server log file https://pastebin.com/wj1gKXv3 https://pastebin.com/XJhuD8zL