See this log. Using Ars Nouveau 1.11.2 on Forge 1.16.4-35.1.36.

It's worth noting that it looks like I still get a somewhat similar looking error with Ars Nouveau disabled, so Ars Nouveau might not be the root cause here.

If you are getting this crash with Ars Nouveau disabled, then it is likely another mod messing with the feature registry. I would remove any performance mods, update forge to latest, and try to find the cause.