https://bugzilla.redhat.com/show_bug.cgi?id=1527670
--- Comment #8 from Parag Nemade pnemade@redhat.com --- This is the issue with either your network setup ( that is network is not working) or mirror is not working from which its going to download metadata of "updates" repository.
Please fix any network issue and try again. Also, reply here your feedback when you attempt again running system-config-language.