How to: solve 429 fetch errors on NextJS and Vercel

Learn to solve an unexpected application error on client-side

Tech Blog Today
Published in
Mar 15, 2022


Recently, I added Medium Feed integration into my personal website. I chose to help fetch the feed and convert it to JSON format. Everything was doing well on local testing. However, it returned 429 errors when deployed to Vercel.

Application error: a client-side exception has occurred (see the browser console for more information).

1-Step Solution

I added before the rss2json API in the fetch, and it works again.

Sample of fetch is provided below:

Before vs. After

Final Output:

My personal website:

Hope help :)

Thanks for reading 🎉

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