game is crashing and giving exit code 1 every time i try to kill returning knight, get him to about half health usually and game will crash. Fanstay MC fabric on cursedforge, log included
hs_err_pid15188.log

I've encountered this a good bit with this boss. Happened a lot at the start of the fight for me

Update java version and your drivers if you haven't already. If this doesn't help, and you've made sure to allocate enough ram to minecraft as well, then make a new issue post here if the crash persists. A video of you showing steps to reproduce the issue would also be nice.