https://paste.dimdev.org/oqugehaneb.mccrash
It does put a Disk in the slot, though

Clicking the Disk in the slot drops it into the world, duplicating it.

What is the disk even supposed to be used for?

Sorry, I cannot reproduce the crash and the log is not accessible anymore. Can you reproduce it with the latest build? If yes, could you re-upload the crash?

It enables macro requests, so you could request a bunch of items in one click.