previously posted to Actually Additions github, but they closed it stating the issue was with Agricraft.
Ellpeck/ActuallyAdditions#1127

This works fine in ActuallyAdditions-1.12.2-r135, but is broken in version ActuallyAdditions-1.12.2-r-136-hotfix2 attempting to interact with agricraft-2.12.0-1.12.0-a4

Crash log:
https://pastebin.com/fhGkdQPx