This current category should be ultimately deleted (or kept only as an old redirected alias) as it has an incorrect name (not the one expected by Babel boxes which uses BCP 47 language tags in their canonical form with uppercase country codes).
However the target of this soft redirect is correct and should exist (but it was incorrectly deleted and blocked by
Metalhead64 using a false assumption): see the
Category:User ko-KP, which is actually properly populated and
should be undeleted (Babel AutoCreate was
not wrong in creating it) in order to make this this current category redirection to be effective.
This category currently contains no pages or media.