Warning:  [mysql error 3065] Expression #1 of ORDER BY clause is not in SELECT list, references column 'zoqmzxaz_fis_gallery.fisgallery_images.date_available' which is not in SELECT list; this is incompatible with DISTINCT

SELECT DISTINCT(image_id)
  FROM fisgallery_image_category
    INNER JOIN fisgallery_images ON id = image_id
  WHERE
    category_id = 1
AND (category_id NOT IN (4))
  ORDER BY date_available DESC, file ASC, id ASC
; in /home/zoqmzxaz/public_html/fis_gallery/include/dblayer/functions_mysqli.inc.php on line 832