How to debug dsymutil error: "It is expected that Clang modules will have exactly 1 compilation unit."

Question

This error message was received during the GenerateDSYMFile phase for an iOS application:

/ Users / name / Library / Developer / Xcode / DerivedData / ModuleCache / HASH / FrameworkName-HASH: It is expected that Clang modules will have exactly 1 compilation unit. The /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/dsymutil command failed with exit code 1

Answer 1

Deleted:

~/Library/Developer/Xcode/DerivedData 

And he was able to build again.