On the cursedforge app

The game crashed whilst initializing game
Error: java.lang.IncompatibleClassChangeError: class dev.su5ed.sinytra.connector.mod.compat.fieldtypes.RedirectingIdMapper overrides final method net.minecraft.core.IdMapper.m_7942_(I)Ljava/lang/Object;

This would be an issue with the connector mod. Needs reported to it's repo.