I recently updated our app to Next.js 16, and soon after started seeing new issues in the backend. Things I’d never seen before: JSON.parse() is failing before the request hits any of the code I wrote. Very strange...

In this blog post I wrote my debugging journey and learnings.

If you're building with NextJS you must not miss this.

I'm no longer building with NextJS and am glad to miss issues like this

TanStack is a better option