I've been getting the error "Cannot read property "registerCommands" of undefined
A new and powerful picture system for RPG Maker! · By
Hi there!
You must use my core plugin somewhere above all other Eli Plugins.
https://hakuenstudio.itch.io/eli-book-rpg-maker-mv-mz
The RPG Maker plugin manager window will warn you about that with a message on the bottom of the window.