Error collecting extracted types: The file “SmartPlusWidgetControl.swift” couldn’t be opened because the text encoding of its contents can’t be determined.

When AppEnum or AppEntity is introduced into the iOS18 Widget file, xcode compilation will report an error: Error collecting extracted types: The file “SmartPlusWidgetControl.swift” couldn’t be opened because the text encoding of its contents can’t be determined.

dyld: Symbol not found: __ZTTNSt3__114basic_ofstreamIcNS_11char_traitsIcEEEE Referenced from: /private/var/containers/Bundle/Application/19315D00-BA14-46B0-83BD-0961BBFFC9B8/VBell.app/VBell Expected in: /usr/lib/libc++.1.dylib in /private/var/containers/Bundle/Application/19315D00-BA14-46B0-83BD-0961BBFFC9B8/VBell.app/VBell Who knows how to solve this problem?