Worker works fine in editors preview tab, but error 1016 in browser

Developers Workers
1

Error 1016: https://unltd.com.hk/
Try to fetch page: https://dev.web.aws.unltd.com.hk
‘aws.unltd.com.hk’ is a subdomain delegated to Route 53.
And the code of worker:

addEventListener('fetch', async event => {
  event.respondWith(fetch('https://dev.web.aws.unltd.com.hk'));
});

Any ideas?

2

Did you find a workaround for this?

I’m experiencing this right now.

Cloudflare don’t even let the request start – it returns a HTTP status code 530 and the html body says:

You’ve requested a page on a website (my-subdomain.example.com) that is on the Cloudflare network. Cloudflare is currently unable to resolve your requested domain (my-subdomain.example.com).