Solved Game crashes, "The game crashed whilst ticking player"

[DoctorSteveJr]

I was playing skyfactory 3 and was screwing around with giant chance cubes and broke a few at the same time which crashed my game.
Each time I try to log into the world, it crashes for the same reason. The minecraft launcher says the error is "java.util.ConcurrentModificationException".

The crash log is attached to the thread.

 

[DoctorSteveJr]

Resolved the issue by taking my playedata out of the save folder, joining, loading the chunk where it kept crashing, then put my old playerdata back in and it somehow worked. This is what was at the crashing site. It's a shame that I didn't get any help with it. (the whole chunk got flipped upside down somehow)