looks like the URL requested on click has some double escaping in a parameter:
https://hi.wikipedia.org/w/api.php?action=parse&format=json&origin=*&disableeditsection=1&prop=text|headhtml&page=%25E0%25A4%25A1%25E0%25A5%2587%25E0%25A4%2582%25E0%25A4%2597%25E0%25A5%2582_%25E0%25A4%25AC%25E0%25A5%2581%25E0%25A4%2596%25E0%25A4%25BC%25E0%25A4%25BE%25E0%25A4%25B0
Declining as GapFinder is deprecated. See https://www.mediawiki.org/w/index.php?title=GapFinder&diff=6585657&oldid=6537997
{"error":"GapFinder has been deprecated. Background: https://phabricator.wikimedia.org/T367549. For the API, please use the LiftWing endpoint. Documentation: https://api.wikimedia.org/wiki/Lift_Wing_API/Reference/Get_content_translation_recommendation. Example migration: https://es.wikipedia.org/w/index.php?title=MediaWiki:Gadget-WikiProject.js&diff=prev&oldid=160820835. For the UI, please use Content Translation: https://www.mediawiki.org/wiki/Content_translation#Try_the_tool "}