This is my crash:

• https://paste.dimdev.org/lufenanugi.mccrash

Just wanted to notify

Hmm I cannot exactly see what's going on here but it appears the lost miner is trying to find a door to enter and things go wrong there.... thanks for notifying.

I removed the door check altogether; next update you will only be able to save them by going to the surface again but at least this crash will no longer happen.