PrimalCore NPE

## Some information
Operating system: Fedora 29
Java version: 1.8_212
Minecraft version: 1.12.2
Baritone version: 1.2.8 (Built from the repo)
Forge mods (if used): PrimalCore

## Exception, error or logs
https://paste.altillimity.com/ratuvewala.md

## How to reproduce
Load a world with PrimalCore
Try using the pathfinding system in any way

## Final checklist
- [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.

Start by reviewing the exception and stack trace at the linked paste, then reproduce the issue in a Minecraft 1.12.2 world with PrimalCore enabled. Use pathfinding as described in the reproduction steps; done means the NPE no longer occurs in that setup.

Written by the indexing model from the issue text.