Reproduce: set multiple sitelinks on the same wikidata item in rapid succession has produced this error on several of the ~10 wikis i modified at nearly the same time (multiple tabs). The $1 clearly needs a param. (the error itself is fine - clicking "confirm" again fixed it)
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Restricted Application added a subscriber: Aklapper. · View Herald TranscriptMay 4 2019, 6:02 AM2019-05-04 06:02:05 (UTC+0)
matej_suchanek closed this task as a duplicate of T163713: Client widget does not report the actual problem.May 26 2019, 10:31 AM2019-05-26 10:31:46 (UTC+0)