I\'m getting the following error toward the end of the build:
error: could not read data from \'/Users/myname/Library/Developer/Xcode/DerivedData/myapp-ftieubjjfkuwy
I heard back from Apple Support.
Something was wrong with one of the generated files. Here are the steps to fix it:
1) Quit Xcode.
2) Open Finder and select Go > Go to Folder...
3) Delete the DerivedData folder
4) Open Xcode.
5) Clean your project
6) Build