Here is one problem I met when build the project.

GPU Frame Capture
Shader performance data maybe unavailable due to deployment target older than device version.

So, after searching, this is only an alert from Xcode which just alert that it might be problems on performance data. And it should be okay just ignore it.

If you find it is annoying, you could also close it by -> Product -> Scheme -> Edit Scheme

Reference

https://stackoverflow.com/questions/52509223/shader-performance-data-maybe-unavailable-due-to-deployment-target-older-than-de