Hi Hoang,
We have checked your reported issue on your provided documentation
link and faced the same issue in our end. And we have corrected the sample by removing
the mode option in the fetch function. Please find the sample link below.
Sample Link: https://stackblitz.com/edit/react-yu8m9t-2rjcg8?file=index.js
We will consider this and correct it in our documentation and
refresh in any of our upcoming releases.