Modpack version:
2.3.1

Java version:
Version 8 update 301 (1.8.0_301-b09 (ex. "11.0.8")

Description:
Place a comparator next to a pyre (input side facing pyre), with pyres containing items in it and it'll crash the game.

When did the crash happen?
The moment you place the comparator's input facing the pyre.

Steps to reproduce:

1. Place down the Pyre
2. Put Chest Beneath Pyre
3. Put Dispenser Behind Pyre
4. Put stuff in Pyre (that has a recipe e.g. charred stone)
5. Put some stuff in chest that is the same as recipe to bulk create.
6. Place Comparator's input toward the Pyre.
7. Crash

Minecraft crash report:
https://pastebin.com/BMaXGigg
https://pastebin.com/CgdeHjgR (Creative World, without Fey Crafter and Attuned Roots Stone)

How much RAM did you dedicate to your client and how much RAM does your PC have?
6GB - has 16GB (even if recommended is 8gb)

Additional context:
Placed Next to Fey Crafter and that Root stone that needed a ritual to activate. Has an Empty Dispenser at the back of the Pyre, followed by a chest that has recipe material beneath the pyre.

Updated Roots to 1.12.2-3.1.2 in Divine Journey 2.4.0 (https://www.curseforge.com/minecraft/modpacks/divine-journey-2/files/3464189), which fixes the issue. (Roots changelog: https://www.curseforge.com/minecraft/mc-mods/roots/files/3461007)

updated to Java JRE 1.8.0_301 after switching to GDLauncher (Latest Java)
Crash Log: https://pastebin.com/fgMrdvEu

JRE 1.8.0_242 also crashes (recommended GDLauncher Java)
Log: https://pastebin.com/7KnA20nH

Edit: Clarification that it has the exact same crash caused by the exact same thing after rebuilding the setup. Added one with the recommended Java version from GDLauncher