Cloudflare Return 520 Status Code

Developers Cloudflare Pages
1

For Workers & Pages, what is the name of the domain?

faceid.asia

What is the error number?

520

What is the issue or error you’re encountering

Backend service can process the request within few second, but Cloudflare return 520 status code in the API response.

2

This is an error at your origin. See the documentation below:

3

Without routing traffic through Cloudflare, the API functions correctly. The problem arises only when traffic is directed through the Cloudflare domain.