Viviendas vacacionales León Tolstoi

Error en la base de datos de WordPress: [Incorrect DATE value: '']
SELECT wp_posts.* FROM wp_posts LEFT JOIN wp_term_relationships ON (wp_posts.ID = wp_term_relationships.object_id) INNER JOIN wp_postmeta ON ( wp_posts.ID = wp_postmeta.post_id ) WHERE 1=1 AND wp_posts.ID NOT IN (752) AND ( wp_term_relationships.term_taxonomy_id IN (15,25,26) ) AND ( ( wp_postmeta.meta_key = 'estate_property_available_from' AND CAST(wp_postmeta.meta_value AS DATE) <= '' ) ) AND wp_posts.post_type = 'property' AND (wp_posts.post_status = 'publish' OR wp_posts.post_status = 'acf-disabled') GROUP BY wp_posts.ID ORDER BY wp_posts.post_date DESC