Hello, First time poster so forgive me if i did anything wrong.
Basically we run a pretty popular CotT server. We have no issues except with crashing when a chunk is loaded with a spawner form dlddungeons. (we assume that is it as we have narrowed it down) We fix the config and it is fine but then happens again
Here is the pastebin:
I have tried to get help from the modpack maker but since I use sponge, I foresee not getting any help so i am here. 
Thanks you for looking at this hopefully this can be repaired. Have a great day!