I have experienced a complete crash to desktop twice now under what I assume are identical circumstances.

My assumption is that it is something to do with the interaction between Corail Tombstone and Sophisticated Backpacks.

What has happened the two times the crash happen is that I am killing mobs and then I somehow get a buff from Corail Tombstone - the ones you get from the lollipops - and immediately it crashes with the attached crash report.

It might be related to the automatic feeding upgrade combined with the magnet upgrade causing this - I will be testing a blacklisting of the lollipops to see if that stops causing it. But it might take some time as the cause is not completely reproducible for me.
crash-2022-10-26_09.16.21-server.txt

It has occurred on both 1.1.0 and 1.1.2.

I think you should probably be posting this in the atm-7 sky github.
However, the crash looks like it's being caused by the feeding upgrade in your backpack. Maybe it has an issue with the corail candy?
As a workaround, you could disable the halloween extras in the corail settings - this should prevent mobs from dropping those items.

You are right! I missed the sky-part when finding the repo. I disabled the autofeeder from using the corail tombstone candies which seemed to remove the crashes - at least for now.

Closing this issue as it is on the wrong repository.