WordPress database error: [Can't create/write to file '/var/tmp/#sql_6089_0.MAI' (Errcode: 28)]SELECT wp_posts.ID
FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id)
WHERE 1=1 AND wp_posts.post_parent = 1504 AND (
wp_term_relationships.term_taxonomy_id IN (9)
) AND wp_posts.post_type = 'page' AND ((wp_posts.post_status = 'publish'))
GROUP BY wp_posts.ID
ORDER BY wp_posts.menu_order, wp_posts.post_title ASC
LIMIT 0, 1