There are thousands of pages generating lua errors when accessing wikidata with Lua (T170039 https://phabricator.wikimedia.org/T170039) and it affects on most/all wikis. The issue is lasting for few weeks since first reported.
It seems to have no root cause, but the best current guess (AFAIK) is due to Lua-sandbox (T171166 https://phabricator.wikimedia.org/T171166).
[Please don't take it personally!] 1. What is the ETA for getting it deployed to production? 2. IMO It looks like there is a little bit miscommunication (between WMF & WMDE?) in handling this case. For future cases, it would be nice if who can better communicate urgency of blocker tasks, especially if it involves other organizations.
Thanks, Eran