Auto build in 1.16.3 not working

## Some information
Operating system: windows 10
Java version:1.8.0_271
Minecraft version:1.16.3
Baritone version:1.6.1
Forge mods (if used): optifine

## Exception, error or logs
[other log.txt](https://github.com/cabaletta/baritone/files/5514599/other.log.txt)
[minecraft log.txt](https://github.com/cabaletta/baritone/files/5514601/minecraft.log.txt)

## How to reproduce

make a super flat world
start auto bulild

## Modified settings
allowBreak
allowInventory
allowPlace
legitMine

## Final checklist
- [x] I know how to properly use check boxes
- [x] I have included the version of Minecraft I'm running, baritone's version and forge mods (if used).
- [x] I have included logs, exceptions and / or steps to reproduce the issue.
- [x] I have not used any OwO's or UwU's in this issue.