SAP build app behaving different than hosted site

hello everyone,

I created an api call to send images to xano using base64, when i try it through SAP builds apps, it works perfect, but after export and host the app on an external site, it does not work.

My setup and the logic:

At the end of the screen it gives a toast when the picture is sent, after that i double check it going on xano to see the new record:

Here is hosted on a website, and the response error after it tried to create a new record:

Does anyone had the same issue? how do i fix it?