The Capricon 47 Scheduling Tool

An error occurred:

SELECT SCH.sessionid AS id, R.display_order, ADDTIME("2027-01-28 00:00:00$",SCH.starttime) AS starttimeFMT, S.duration AS duration, SCH.roomid, S.title as name, S.pubstatusid, S.statusid, T.typeid AS type, S.progguiddesc as progguiddesc, S.participantlabel as participantlabel, GROUP_CONCAT(' ',P.pubsname, IF (POS.moderator=1,' (M)','') ORDER BY P.sortedpubsname) as 'participants' FROM Sessions S JOIN Schedule SCH USING (sessionid) JOIN Rooms R USING (roomid) JOIN Types T USING (typeid) LEFT JOIN ParticipantOnSession POS ON SCH.sessionid=POS.sessionid LEFT JOIN Participants P ON POS.badgeid=P.badgeid WHERE S.statusid = 3 #3 means scheduled AND S.pubstatusid = 2 #2 means public only #AND R.on_public_grid = 1 AND R.roomid IN () GROUP BY SCH.sessionid ORDER BY SCH.starttime;
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 ') GROUP BY SCH.sessionid ORDER BY SCH.starttime' at line 25
Error querying database. Unable to continue.