@Chetan Kumar
Thank you for your post and I apologize for the delayed response!
When it comes to the "Deploy to Azure" button, I was running into the same issue where the page would error. I'd recommend creating a GitHub issue within this samples repo so the owners of this article can resolve the deploy button.
If you have any other questions or have issues gaining traction on your GitHub issue, please let me know.
Thank you for your time and patience throughout this issue.
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