I got this when I tried to add a sitelink on
https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:Rotulagem/Rodap%C3%A9
pointing to
https://en.wikipedia.org/wiki/Wikipedia:Labels/footer
TypeError: $elem.data(...) is undefined
I got this when I tried to add a sitelink on
https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:Rotulagem/Rodap%C3%A9
pointing to
https://en.wikipedia.org/wiki/Wikipedia:Labels/footer
TypeError: $elem.data(...) is undefined
Both pages were moved and probably changed meaning, so I'm hesitant to try to reproduce this.
Can you check if you can still reproduce this somehow?
I tried again, but the error didn't happen.
https://www.wikidata.org/w/index.php?diff=prev&oldid=251032375