Failed to read the vanilla structure template

[Wehrmachtserdbeere]

Describe the bug When trying to load the NBT file via LiteMatica, it gives an Error: Exception while trying to read schematic from file, 'C:Users\gastg\AppData\Roaming\.Minecraft schematics\MUSIC Lost Kitten.nbt Failed to read the vanilla structure template from "MUSIC Lost Kitten.nbt"

To Reproduce Steps to reproduce the behavior:

1. Load .mid(i) song into ONBS
2. Export as Structure
3. Check 1.13+
4. When done, go into Minecraft
5. Try to load the NBT file

Expected behavior It should load a schematic of the structure

Screenshots Added

Additional context I attempted to open it in Cubical.xyz and all the note blocks were shown as sponges. Using a schematic made the same day in the original NBS, it showed everything correctly.

[OctoFlareDev]

The .nbt structure ONBS exported does not strictly follow the minecraft structure format mainly because of the structure size limit. It should load properly when using structure blocks. For other softwares like litematica, exporting as 1.12 schematics is the best option.