Hi, after updating to the latest (4.2.0) on mc 1.19.4 it sudennly started crashing. It might be most likely a mod incompat. I was hoping that you might see something in logs, so here's a full log: https://mclo.gs/K8cYhuk
And here's just a crash report: https://mclo.gs/EF1yM09

Having the same exact crash on 1.19.2, Quilt only. Definitely a mod conflict, but not just some single mod. I could narrow down one of mine to C2ME, however, there are more. You can consistently reproduce the crash with C2ME + ModernFix on Quilt, though.

As a temporary workaround set mixin.perf.nbt_memory_usage=false in the config.

These issues should be resolved in the latest dev build; I will make a release later today.