Today !log get us a reply from stashbot:
<stashbot> hashar: Failed to log message to wiki. Somebody should check the error logs.
The message seems to be written to ElasticSearch since it shows up at https://tools.wmflabs.org/sal/production but it is not showing up on wikitech https://wikitech.wikimedia.org/wiki/Server_Admin_Log
Last entry is:
2019-03-18 19:56 bawolff@deploy1001: Synchronized wmf-config/wikitech.php: Adjust ldap config (duration: 00m 48s)