The Wikidata site opens, but I'm not able to add a sitelink.
And there's another Hebrew Wikipedia user who complained about it.
I click the "Edit" button in the sitelinks list at https://www.wikidata.org/wiki/Q1016414 , and the line for typing the language code doesn't appear.
And if I try to use the "Add link" tool on the Wikipedia article, then nothing happens when I type a language code.
On the Telegram channel several people think it's an "Unbreak now" issue.