I'm using Ars-Nouveau 3.2.6 and Roughly Enough Items 9.1.518 1.19. Every time I close the worn notebook, the game crashes. Cross posting because I can't tell which mod causes the crash:

shedaniel/RoughlyEnoughItems#1060

This looks like an issue with REI or JEI. Does your server have JEI installed? Not sure how REI works, but something is missing on that end.