A database query error has occurred. This may indicate a bug in the software.

[fd408b5db10bfa95933a7bed] 2019-08-16 11:10:59: Fatal exception of type "Wikimedia\Rdbms\DBQueryError"

Aug 14 04:51:11 db postgres[50750]: [8-1] ERROR:  column "qcc_users.user_id" must appear in the GROUP BY clause or be used in an aggregate function at character 103
Aug 14 04:51:11 db postgres[50750]: [8-2] STATEMENT:  SELECT /* ActiveUsersPager::buildQueryInfo (ActiveUsersPager)  */  qcc_title,qcc_title AS "user_name",user_id,COUNT(rc_id) AS "recentedits"  FROM (SELECT  qcc_title,user_id,actor_id  FROM "querycachetwo" JOIN "mwuser" ON ((user_name = qcc_title)) JOIN "actor" ON ((actor_user = user_id))   WHERE qcc_type = 'activeusers' AND qcc_namespace = '2' AND (NOT EXISTS (SELECT  1  FROM "ipblocks"    WHERE (ipb_user=user_id) AND ipb_deleted = '1'  ))  ORDER BY qcc_title ASC LIMIT 1001  ) "qcc_users" LEFT JOIN "recentchanges" ON ((rc_actor = actor_id) AND (rc_type != '5') AND (rc_type != '6') AND (rc_log_type IS NULL OR rc_log_type != 'newusers') AND (rc_timestamp >= '2019-07-14 19:51:11+00'))    GROUP BY qcc_title ORDER BY qcc_title

Aug 13 15:00:02 db postgres[5685]: [13-1] ERROR:  column "actor_rc_user.actor_name" must appear in the GRO
UP BY clause or be used in an aggregate function at character 76
Aug 13 15:00:02 db postgres[5685]: [13-2] STATEMENT:  SELECT /* RecentChangesUpdateJob::updateActiveUsers wiki@hosting */  actor_rc_user.actor_name AS "rc_user_text",MAX(rc_timestamp) AS "lastedittime"  FROM "recentchanges" JOIN "actor" "actor_rc_user" ON ((actor_rc_user.actor_id = rc_actor))   WHERE (actor_rc_user.actor_user > 0) AND (rc_type != '5') AND (rc_log_type IS NULL OR rc_log_type != 'newusers') AND (rc_timestamp >= '2019-07-14 06:00:02+00') AND (rc_timestamp <= '2019-08-13 06:00:02+00')  GROUP BY rc_user_text