I have a Flask application that sends a curl request to a website protected by Cloudflare. When I run this application locally on localhost, everything works fine. However, after deploying it to Vercel, I encountered the following error when trying to run it:

<h2 data-translate="blocked_why_headline">Why have I been blocked?</h2>
<p data-translate="blocked_why_detail">
This website is using a security service to protect itself from online attacks. 
The action you just performed triggered the security solution. There are several 
actions that could trigger this block, including submitting a certain word or 
phrase, a SQL command, or malformed data.
</p>

Why does this happen, and how can I resolve this issue?