Database Error; SQL: SELECT
DISTINCT
`t`.*
FROM `wp_posts` AS `t`
WHERE ( ( `category`.`slug` = 'outdoor-living' ) AND ( `t`.`post_type` = 'portfolio' ) AND ( `t`.`post_status` IN ( 'publish' ) ) )
ORDER BY `t`.`menu_order`, `t`.`post_title`, `t`.`post_date`
LIMIT 0, 20; Response: Unknown column 'category.slug' in 'where clause'
