My project was working fine, but now I'm getting this Vercel error. What could have changed?

If your project was previously working and suddenly started showing this error, it's likely due to changes in your Vercel build environment. This could be: 1. Vercel automatically updating the default Node.js runtime to a version that doesn't support 'stream/web' as expected by your project. 2. A dependency update in your project that now explicitly relies on or expects 'stream/web', and your current Node.js version isn't compatible.