[BUG] buffer_update: Buffer argument is not a valid buffer of any type.

[wladi0097]

Godot version: v4.1.1
Plugin version: v1.3.0-stable (c17f838)
Platform: Windows 10

Issue description
Maybe related to #32 or maybe to godotengine/godot#68592 ?
Every time the MMI_container has more than one MuiltimeshInstance3D it throws following error on loading of the map:

E 0:00:03:0011   buffer_update: Buffer argument is not a valid buffer of any type.
  <C++ Error>    Method/function failed. Returning: ERR_INVALID_PARAMETER
  <C++ Source>   drivers/vulkan/rendering_device_vulkan.cpp:5858 @ buffer_update()

Err thrown in here

Steps to Reproduce

1. Add at least two plants
2. run the scene.

Minimal reproduction project
Funny enough is that I cannot reproduce this in any small project this only happens in my bigger one. And if I delete the second plant everything works as expected.

[dreadpon]

Fixed by [4d96dc7] as mentioned in #32.
Thank you for pointing out a relevant Godot issue.
If this error persists on your side, please continue discussion in #32.