ListForm Error: sql process error:
(SELECT item.*, item_type.name AS item_type_name, item_type.action AS item_type_action, video_game.ref_developer, video_game.ref_publisher, video_game.ref_esrb_rating, video_game.local_players_number, video_game.lan_players_number, video_game.internet_players_number, video_game.audio, video_game.video, video_game.memory_volume, video_game.controls, video_game.ref_pay_as_you_go_logic,  CONCAT('http://www.getgaming.com.au/dynamic_data/items/', LEFT(item.id, 1), '/', item.id, '/full', '.jpg') AS full_image_file_src ,  CONCAT('http://www.getgaming.com.au/dynamic_data/items/', LEFT(item.id, 1), '/', item.id, '/thumbnail', '.jpg') AS thumbnail_image_file_src , platform.name AS platform_name, platform.action AS platform_action, platform.code AS platform_code,
                   platform.is_rent_available as platform_is_rent_available, 
                   platform.is_sell_available as platform_is_sell_available,
                   item_price.price AS price,
                   item_price.used_price AS used_price,
                   item_price.keep_price AS keep_price,
                   ROUND(if(item_rating.rate, AVG(item_rating.rate), 0), 1) AS rating,
                   store.count_new, (store.count_used+store.count_rental) as count_used, store.count_rental,
                   store.is_sell_available,
                    CONCAT('http://www.getgaming.com.au/dynamic_data/pdf_temp/game_instructions/', LEFT(item.id, 1), '/', item.id, '/instruction.pdf') AS manual_path  FROM (items AS item

                INNER JOIN video_games AS video_game ON video_game.ref_item = item.id
                INNER JOIN item_types AS item_type ON item.ref_type = item_type.id
                INNER JOIN item_platforms AS platform ON item.ref_platform = platform.id
                
                )
                LEFT JOIN item_prices AS item_price ON ( item_price.ref_item = item.id AND item_price.ref_currency = '1' )
                LEFT JOIN video_game_genre_references AS video_game_genre_reference ON video_game_genre_reference.ref_video_game = item.id
                LEFT JOIN video_game_genres AS video_game_genre ON video_game_genre_reference.ref_genre = video_game_genre.id
                LEFT JOIN video_game_feature_references AS feature_reference ON feature_reference.ref_video_game = item.id
                LEFT JOIN video_game_features AS feature ON feature_reference.ref_feature = feature.id
                LEFT JOIN item_reviews AS item_rating ON item_rating.ref_item = item.id
                LEFT JOIN store AS store ON store.ref_item = item.id
                 WHERE 1  AND item.ref_platform = '2'  AND item.release_date > NOW()  AND item.ref_status = 2 AND item.ref_type = '1'  AND item.ref_status = 2 GROUP BY item.id  ORDER BY esrb_rating_code DESC)
:
Unknown column 'esrb_rating_code' in 'order clause'