Steps to reproduce
- Go to www.wikidata.org
- Switch your language to any non-English language
- Click Wikidata logo on top left.
You're sent to https://wikidata.org/wiki/Wikidata:Main_Page
You're sent to language-dependent name of main page (Czech "Hlavní strana"), which doesn't exist.
Tested with cs.wikipedia, CNR. Seems to be Wikidata-specific ATM. Boldly triaging to UBN, since this issue affect basically everyone using non-English interface => quite a lot of users.