I have some code that is about a year old that used to work. I can no longer build the project. I am using Xcode 10.The error appears in the block"copying swift standard libraries"It says: libswiftMetal.dylib: code object is not signed at allI am using automatic code signing.Here is the output:CopySwiftLibs /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app (in target: IsPrime) cd /Users/betten/DEV.18/iOS/ANTON/IsPrime export CODESIGN_ALLOCATE=/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate export DEVELOPER_DIR=/Applications/Xcode.app/Contents/Developer export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS12.0.sdk builtin-swiftStdLibTool --copy --verbose --sign 83F30FCA689D3636D925B74C4EF7FD6E98864CAA --scan-executable /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/IsPrime --scan-folder /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks --scan-folder /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/PlugIns --platform iphoneos --toolchain /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain --destination /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks --strip-bitcode --resource-destination /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app --resource-library libswiftRemoteMirror.dylib --strip-bitcode-tool /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/bitcode_strip --emit-dependency-info /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Intermediates.noindex/IsPrime.build/Debug-iphoneos/IsPrime.build/SwiftStdLibToolInputDependencies.depRequested Swift ABI version based on scanned binaries: 6libswiftMetal.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dyliblibswiftQuartzCore.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftQuartzCore.dyliblibswiftUIKit.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftUIKit.dyliblibswiftCoreFoundation.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftCoreFoundation.dyliblibswiftCoreImage.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftCoreImage.dyliblibswiftFoundation.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftFoundation.dyliblibswiftDispatch.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftDispatch.dyliblibswiftObjectiveC.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftObjectiveC.dyliblibswiftDarwin.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftDarwin.dyliblibswiftCore.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftCore.dyliblibswiftSwiftOnoneSupport.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftSwiftOnoneSupport.dyliblibswiftos.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftos.dyliblibswiftCoreGraphics.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftCoreGraphics.dyliblibswiftRemoteMirror.dylib is up to date at /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/libswiftRemoteMirror.dylibProbing signature of /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib/usr/bin/codesign -r- --display /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib/Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib: code object is not signed at allCodesigning /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib/usr/bin/codesign --force --sign 83F30FCA689D3636D925B74C4EF7FD6E98864CAA --verbose /Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib/Users/betten/Library/Developer/Xcode/DerivedData/IsPrime-coukjhqgswmqsbbmmsadqdscuugp/Build/Products/Debug-iphoneos/IsPrime.app/Frameworks/libswiftMetal.dylib: errSecInternalComponenterror: Failed with exit code 1