Hello, I was messing around in my reactor room when I found out that liquid nitrogen exists in ExtraPlanets, I found some of it in one of my chests, and moved to my reactor room because I have a habit of always submerging my reactors in water/coolant, etc. I poured some of it on the reactor itself just to see how it actually looks, and boom, minecraft not responding, crashed a sec later, tried to rejoin back in to my server, crashed again, and again.
Detailed error that I get: https://pastebin.com/raw/eKKYfQgK