Warning:  [mysql error 1054] Unknown column 'com.email' in 'field list'

SELECT SQL_CALC_FOUND_ROWS com.id AS comment_id,
       com.image_id,
       ic.category_id,
       com.author,
       com.author_id,
       u.mail_address AS user_email,
       com.email,
       com.date,
       com.website_url,
       com.content,
       com.validated
  FROM photo_image_category AS ic
    INNER JOIN photo_comments AS com
    ON ic.image_id = com.image_id
    LEFT JOIN photo_users As u
    ON u.id = com.author_id
  WHERE 1=1
    AND validated='true'
    AND  (category_id NOT IN (79,144,151,343,251,252,250,260,249,253,280,244,243,240,239,237,235,233,296,45,46,230,295,228,63,224,284,70,75,76,77,272,94,96,209,309,310,106,202,200,199,116,117,118,121,196,255,192,254,257,256,133,134,215,281,176,143,145,174,147,221,315,219,218,172,189,226,201,242,241,236,225,211,210,207,206,205,203,193,216,248,165,191,234,286,179,220,247,246,245,238,307,258,188,282,227,223,194,190,182,181,198,279,263,317,308,303,305,266,268,269,270,273,274,275,276,277,2 in /home/congressfi/ot-dunkerque/photo/include/dblayer/functions_mysqli.inc.php on line 847