This message is generated by Xcode during the build process and is related to the state of a feature called DVTCoreDeviceEnabledState.
The message indicates that the DVTCoreDevice feature has been disabled via a user default setting called "DVTEnableCoreDevice". This means that the functionality provided by DVTCoreDevice is currently disabled.
DVTCoreDevice is a feature in Xcode that is used for interacting with iOS devices for development and debugging purposes. This includes features such as device provisioning, device installation, code signing, and debugging on physical devices.
Disabling DVTCoreDevice may limit your ability to build, install, and debug your application on physical devices from within Xcode. If you are experiencing any issues related to iOS device interaction, you may want to check your Xcode preferences and make sure that DVTCoreDevice is enabled.
To enable the DVTCoreDevice feature, you can remove the "DVTEnableCoreDevice=disabled" user default setting. This can be done by going to Xcode -> Preferences -> Locations -> Command Line Tools and selecting a valid Xcode installation.
It's important to note that modifying user default settings should be done with caution, as it may impact the behavior of Xcode and your development environment.