خطأ فى قاعدة بيانات ووردبريس: [Unknown column 'pn.mail_to_default' in 'field list']
SELECT n.*, pn.title, pn.text, pn.tooltip, pn.text_format, pn.use_short_url, pn.icon_image, pn.profile_name, pn.mail_to_default FROM `wp_supsystic_ss_projects` AS p LEFT JOIN `wp_supsystic_ss_project_networks` AS pn ON p.id = pn.project_id LEFT JOIN `wp_supsystic_ss_networks` AS n ON pn.network_id = n.id WHERE p.id = 2 ORDER BY pn.position ASC