A Database Error Occurred

Error Number: 1055

Expression #2 of SELECT list is not in GROUP BY clause and contains nonaggregated column 'freegames4rest.games_category.category' which is not functionally dependent on columns in GROUP BY clause; this is incompatible with sql_mode=only_full_group_by

SELECT `game_id`, `category` FROM (`games_category`) WHERE `game_id` IN ('northern_tale', 'all_my_gods', 'island_tribe_3', 'roads_of_rome_3', 'island_tribe_2', 'the_joy_of_farming', 'farm_mania_hot_vacation', 'roads_of_rome_ii', 'janes_hotel_mania', '3_days_amulet_secret', 'roads_of_rome', 'janes_realty_2', 'farm_mania_2', 'bubble_xmas', 'janes_zoo', 'ice_gems', 'pet_playground', '3_days_zoo_mystery', 'ashtons_family_resort', 'farm_mania', 'dress_up_rush') GROUP BY `game_id`