An Error Was Encountered

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ''20', 20' at line 7

SELECT id, location, UNIX_TIMESTAMP(date) as date, CASE WHEN isNULL(agenda_data) THEN 'false' ELSE 'true' END as hasagenda, CASE WHEN isNULL(minutes_data) THEN 'false' ELSE 'true' END as hasminutes FROM meetings ORDER BY date DESC LIMIT '20', 20