Probably a function of what looks to be an AWS Lambda outage.

I've gotta get me a t-shirt saying: I'm seeing "elevated error rates". Can't count the number of times I've seen that line on status pages (not only vercels, any SaaS). It always feels like downplaying the situation.

So is Netlify: https://www.netlifystatus.com/

they run on aws so no surprises there