Hi there, I know that Autofilter is to blame here but I wanted to post this here so that you were aware of the issue in case there could be anything done for your mod to harden against a crash like this in the future.
https://gist.github.com/jarquafelmu/896412920dbed2a96f6be85a36f0aecb
With the mod autofilter and deadlock's stacked items on a belt, trying to upgrade the belt causes this crash to happen