[1.16.5] ModelEngine not working

[Sleepwalkerx]

Environment

Minecraft version(1.12.2/1.16.5/1.18.2): 1.16.5
Build version(Get from /version command): CatServer-1.16.5-69069a9c-server
Mods/Plugins: ModelEngine (any version)

Describe the bug
The plugin throws the same error into the console - it cannot find some field in the chunk. Any version of the plugin shows the same result. (see the error in the screenshot)

Expected behavior
The plugin should not throw errors into the console like a machine gun.

To Reproduce
install the plugin on the server

Screenshot/Video