The icon "spawn-command" in the menu "menu/example.yml" has an invalid attribute "MATERIAL": unknown material "SKULL:3"

[LMS5413]

Confirmation

• [X] I have read the FAQ.
• [X] I have tested the latest development build of Chest Commands and the bug is still present.
• [X] I have updated Spigot to the latest release for my particular Minecraft version.
• [X] I made sure the bug hasn't already been reported on the issue tracker.

Description

I was setting up chest commands in 1.12.2 and wanted it by skull. But when I put an item with the ID of this error even though it is valid even with the ID of the head of the error

How to reproduce

In material put 397:3 that the error will appear

Server version

This server is running Mohist version 1.12.2-261 CMC: 1.12.2) (Implementing API version 1.12.2-R0.1-SNAPSHOT, Forge version 14.23.5.2855)

Chest Commands version

4.0.3

Additional information

No response