Fetch inside production cloudflare pages does not work, but works in the preview branches

The same feature, fetching a simple api, but it does not work in the production branch but work in the preview branch in cloudflare pages. Does anybody have this issue before?
2 Replies
.supermario12342003
actually to be precise, my production domain is https://app.hellosafe.com/demo/comparator/demo and the preview url is https://47230616.hellosafe-apps.pages.dev/demo/comparator/demo they are both at the same commit, the fetch in app.hellosafe.com does not work, but in the preview url, it's working.
.supermario12342003
after i change the DNS setting from Proxied to DNS only, it's working now