Query failed:
SELECT 
                    

                    e.id,
                    e.title,
                    e.timestamp,
                    e.comments,
                    e.exflag,
                    e.authorid,
                    e.trackbacks,
                    e.isdraft,
                    e.allow_comments,
                    e.last_modified,

                    a.realname AS author,
                    a.username AS loginname,
                    a.email
                     , e.body, e.extended
                     
                FROM
                    serendipity_entries AS e
                    LEFT JOIN serendipity_authors a
                        ON e.authorid = a.authorid
                    LEFT JOIN serendipity_entrycat ec
                        ON e.id = ec.entryid
                    LEFT JOIN serendipity_category c
                        ON ec.categoryid = c.categoryid
                    
                     WHERE e.timestamp >= 1448924400 AND e.timestamp <= 1451602799 AND isdraft = 'false' AND (( (c.category_left  BETWEEN 65 AND 66))) AND e.timestamp <= 1534337700
                     GROUP BY e.id
                     
                     ORDER BY timestamp DESC
                      LIMIT 12
/ Disk full (/tmp/#sql_239_51.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")