Attempting `undo` action on betalabs [[https://ru.wikipedia.beta.wmflabs.org/w/index.php?title=%D0%A2%D0%B5%D0%BC%D0%B0:Teq8026dm5whantb&action=undo-edit-post&topic_startId=teq8026f6cb5qwi7&topic_endId=teq80qwjyd2rtixb | ruwiki ]] brings Database error page.
logstash among other level:INFO references to to the error has this one:
```
January 30th 2018, 15:35:42.000 unique_id:WnEBTgpEE4AAABB@fKwAAAAF reqId:WnEBTgpEE4AAABB@fKwAAAAF server:ru.wikipedia.beta.wmflabs.org db_server:10.68.18.35:3306 wiki:ruwiki channel:DBQuery type:mediawiki error:You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'FORCE INDEX (rc_timestamp) WHERE rc_title = 'Teq8026dm5whantb' AND rc_timestamp' at line 1 (10.68.18.35:3306) http_method:GET @version:1
```