I try this multiple times in my personal modpack (its about 170 mods) When i include Rer in my modpack any world i try to enter says invalid player data removing rer solves problem
Crash part Cropped log.txt
i think error occurse in lines 260-312 this is cropped from full log

here is full log:

2023-06-19-6.log
cropped part starts line 2992

And one more thing i try removing other mods but i couldn't find any solution only rer causes this problem