Upgrading @nhost/nextjs from 1.13.21 to 1.13.22 produced ReferenceError: Can't find variable: React in Next.js apps. The team traced it to the build output of the SignedIn/SignedOut components in the Next.js package, which suddenly emitted React.createElement(...) without importing React. A fixed build was released in @nhost/nextjs 1.13.25.