JsonConfig is logging in using deprecated methods:
Warning: API call had warnings trying to login: warnings={"login":{"*":"Fetching a token via \"action=login\" is deprecated. Use \"action=query\u0026meta=tokens\u0026type=login\" instead."}}, query={"action":"login","lgname":"Zerowiki@banners","lgpassword":"***"} [Called from JsonConfig\JCUtils::warn in /srv/mediawiki/php-1.29.0-wmf.7/extensions/JsonConfig/includes/JCUtils.php at line 52] in /srv/mediawiki/php-1.29.0-wmf.7/includes/debug/MWDebug.php on line 309
This has been going on for some time, and needs fixing.