No clue what caused it. I disabled the registering new recipes & burst seed blocks, then edited the script to remove said seed burst blocks.

Keep giving this same crash:
crash-2020-12-18_20.37.20-client.txt

Game log:
latest.log

Update: Re-enabled the recipe register and deleted the script I changed, still getting the same error. I'm going to disable the mod for now, but I hope this gets fixed soon. Really wanted to use it in my pack.