this shows up about 5 time when i log into a server then the server restarts

unable to determine blocks eligibility for chiseling, net.darkhax.darkutils.features.sneaky.BlockSneaky attempted to load net/minecraft/client/particle/ParticleManager

Hello, I need the full crash log to know the actual issue.

it doesn't generate a full crash log that comes across the console right before crash

A crash log is always generated. Look for profile folder/logs/fml-client-latest.log