fatal error: 'type_traits' file not found

[biskero]

Hello,

I am getting the following error at compile time of my QML mobile application for Android:

../../../Qt/5.13.0/android_armv7/include/QtCore/qglobal.h:45:12: fatal error: 'type_traits' file not found
#  include <type_traits>
           ^

I am on macOS 10.12.6 with Xcode9.2 with Qt 5.13, tried 5.12.4 and .3
Android SDK - 28
Android NDK bundle - 20

I searched online but could not find a detailed explanation and which settings I am missing for my project.
Any suggestions?

Thx