Unknown column 'author' in 'field list'

select id, author, author_id, reading_time, title, title2 as url, body, DATE_FORMAT(FROM_UNIXTIME(date_added),'%d/%m/%Y') as date, DATE_FORMAT(FROM_UNIXTIME(date_added),'%Y-%m-%dH%k:%i:%s+00:00') as date_published, IF(img_file_1 IS NULL or img_file_1 = '', img_file_5, img_file_1) as img1, img_file_2 as img2, img_alt_1, img_alt_2, meta_description, body2 as imagesize from cms where blog_post = 1 and title2 = 'buying-at-an-auction-and-clearing-your-property'