If you can't build an app with the Xcode and you are getting the following error, please update your Xcode to the latest version.
error: exportArchive: ipatool failed with an exception: #<CmdSpec::NonZeroExitException: $
/Applications/Xcode.app/Contents/Developer/usr/bin/bitcode-build-tool -v -t
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin --sdk
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.1.sdk -o
/var/folders/6q/wgy6jtp12w5gzgm9lzcglpqw0000gn/T/ipatool20200913-11727-fx8cxd/thinned-out/arm64/Payload/example.app/Frameworks/Shake.framework/Shake --generate-dsym
/var/folders/6q/wgy6jtp12w5gzgm9lzcglpqw0000gn/T/ipatool20200913-11727-fx8cxd/thinned-out/arm64/Payload/example.app/Frameworks/Shake.framework/Shake.dSYM --strip-swift-symbols
/var/folders/6q/wgy6jtp12w5gzgm9lzcglpqw0000gn/T/ipatool20200913-11727-fx8cxd/thinned-in/arm64/Payload/example.app/Frameworks/Shake.framework/Shake