Some information

Operating system: Windows 10
Java version: Latest
Minecraft version: 1.12.2
Baritone version: One in Impact 4.7
Forge mods (if used): N/A

How to reproduce

running build command
I downloaded the schematic from here:
https://www.youtube.com/watch?v=CgS-spZPKxc

at first it said it couldn't execute, but then I realised I need obsidian in my hand, but after running the command again, my game freezes, and then crashes.

I heard that build is not supported at 1.13 and above, which is why I'm running 1.12.2

Any help would be appreciated!

have you checked to see if a file is missing or corrupted. (dumb question i know, just a necessary one.)

I have checked, I've also tried different schematics, that doesn't seem to be the problem.