jos-Error: Unknown column 'ff.required' in 'field list' SQL=SELECT ff.form_id, ff.`type`, IF(ff.name <> '', ff.name, CONCAT("field__", ff.id)) AS name, ff.label, ff.hint, ff.required, ff.configuration, ff.sort, f.title, f.instructions FROM #__form_field AS ff INNER JOIN #__form AS f ON f.id = ff.form_id WHERE ff.private=0 AND f.id = 1 AND (ff.name <> 'name' AND ff.name <> 'email') ORDER BY ff.form_id ASC, ff.sort ASC