after uploading my app to testflight I get back a reply from Apple about issues with the app.
Invalid Swift Support - The files libswiftDarwin.dylib, libswiftMetal.dylib, libswiftCoreAudio.dylib, libswiftQuartzCore.dylib, libswiftos.dylib, libswiftObjectiveC.dylib, libswiftDispatch.dylib, libswiftCoreGraphics.dylib, libswiftCoreFoundation.dylib, libswiftUIKit.dylib, libswiftCoreMedia.dylib, libswiftCore.dylib, libswiftFoundation.dylib, libswiftSwiftOnoneSupport.dylib, libswiftXCTest.dylib, libswiftCoreImage.dylib aren't at the expected location /Payload/*App.app/Frameworks. Move the file to the expected location, rebuild your app using the current public (GM) version of Xcode, and resubmit it.
After inspecting the .ipa I discovered that there is a directory called SwiftSupport and after doing a side by side comparison, I discovered that two frameworks are missing from the Payload/Frameworks but I am not using these frameworks (libCoreMedia and libXCTest. Does anyone have an idea why issue occurs. I am running Swift 4.2 in Xcode 10