Xcode error when Archiving linker command failed with exit code 1 (use -v to see invocation) clang

Hi, when Archiving my Unity (2018.1.6f1) iOS project in Xcode (10.1), with OSX Mojave, I get one error stating "liner command failed with exit code 1 (use -v to see invocation) clang" I've already tried the following with no luck:

• Removed Unity IAP.

• Set the target version from default 8.0 to 9.0.

• Set 'enable bitcode' to 'no'.

• Removed ARM7 architecture.

• Accepted recommend build settings from Xcode.

• Tested archiving the sample IAP project (https://forum.unity.com/threads/sample-iap-project.529555/) with success and copied its Unity build and player settings (iOS publish settings).

I'd strongly prefer to not update Unity and especially not start a new project. Any help is appreciated.