Custom tunnel function not working

## Some information
Operating system: Windows 10 (64 bit)
Java version: Version 8 Update 271
Minecraft version: 1.16.4
Baritone version: 1.6.2
Forge mods (if used): Optifine

## Exception, error or logs
[CHAT] [Baritone] > tunnel 5 5 5
[CHAT] [Baritone] Creating a tunnel 5 block(s) high, 5 block(s) wide, and 5 block(s) deep

It says it creates the tunnel and it doesn't mine blocks.

## How to reproduce
Type the 3 parameters after the #tunnel command #tunnel command.

## Modified settings
allowParkour - true
allowParkourPlace - true
avoidance - true
buildIgnoreExisting - true
freeLook - false

## 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.