You cannot build Mendix apps with Xcode 16.3. There is no other option than downgrading your Xcode installation. You can download Xcode 16.2 from the Apple developer site, although Apple did hide it a bit:
https://developer.apple.com/download/all/?q=xcode
Scroll down to find Xcode 16.2
There are several ways to run multiple Xcode versions side by side but that is beyond our case, as Xcode 16.2 is not usable for Mendix with the current versions of React Native in the native builds.
When Mendix updates the React Native library in a future Mendix release, we will be able to use Xcode 16.3
When building using Bitrise, be sure to select the Xcode 16.2 stack
Hi Marcel, I realized it during the weekend deep diving on that, indeed the version 16.2 works fine.
Thank you,
Bruno