Hi, I noticed that whenever I unlock an advancement or crafting recipe, the game crashes, but luckily I found a workaround by giving myself all advancements. Here are the crash reports, and I only had Morph and IchunUtil. It doesn't happen in vanilla minecraft. Do you know what's going on?
crash-2017-11-14_15.49.01-server.txt
crash-2017-11-14_15.42.18-server.txt
crash-2017-11-14_15.45.48-server.txt

There are no lines relating to Morph, why are you reporting it here?