is automatically signed for development, but a conflicting code signing identity code example
Example: conflicting provisioning settings error when I try to archive to submit an iOS app
Close Xcode project
Using finder go to project folder
Right click on .xcodeproj and choose "Show Package Contents"
Right click on project.pbxproj go on "Open With" and choose TextEdit
Now search for your Provision Profile instanceId specified in the error message.
Delete all found texts and let Provisioning Profiles clean.
Save & Close
Open Xcode
Enable automatically manage signing