If you look at the presented links on the page:
Commons:User:White Cat, m:User:White Cat#Bots, betawikiversity:User:Computer, de:Benutzer:Computer, en:User:Computer, es:Usuario:Computadora, fr:Utilisateur:Ordinateur it:Utente:Computer
They are all redlinks.
Regular interwiki links ([[es:Usuario:Computadora]]) work fine unlike irregular interwiki links([[:es:Usuario:Computadora]])
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Severity: normal