Immediately after entering /profile (#ofchunks) all, my game freezes for a second or two then crashes

Here's the crash log https://pastebin.com/0CY90tEQ

Cross mod with Yabba
com.latmod.yabba.YabbaEventHandler.tickServerWorld(YabbaEventHandler.java:130)

BarrelNetwork.get(event.world).tick(); which should always be non-null, since its a capability that's attached to world. How is it possible to be null in this case?

Not exactly sure, why it would be causing a null there. We do create a DummyWorld and something might go wrong there. It could also be any other mod in the list causing some weird onTick event.

@IceArrow04 could you try with just Yabba and JER?

@LatvianModder I'll check if there is something I'm missing (might contact you on Discord to figure this one ou)

Alright after testing with just YABBA and JER (and their respective dependencies) there seems to be no issues with the /profile command so I'm not sure what's up.
Here's my full mod list if it's of any help
https://ftb.gamepedia.com/FTB_Ultimate_Reloaded

I "fixed" it on my end (added nullcheck) so latest yabba will not error

Think adding that null check is the best "fix", considering it doesn't happen with just YABBA and JER. Some other mod must trigger the crash causing tick.