You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'OR optr_dyn_cats.id = ) AND optr_dyn_cats.status = 'A' GROUP BY optr_dyn_cats...' at line 10

SELECT 
                  optr_dyn_cats.*,
                  optr_dyn_cats_assoc.pkt_id,
                  optr_dyn_cats_assoc.main_cat_id,
                  optr_dyn_cats_assoc.id AS assoc_id
                FROM
                  optr_dyn_cats 
                  LEFT JOIN optr_dyn_cats_assoc 
                    ON optr_dyn_cats_assoc.main_cat_id = optr_dyn_cats.id 
                WHERE TRUE AND (optr_dyn_cats.related_id =  OR optr_dyn_cats.id = ) AND optr_dyn_cats.status = 'A' GROUP BY optr_dyn_cats.id ORDER BY optr_dyn_cats.order ASC 
-- /var/www/vhosts/optitravel.net/httpdocs/optitravel/online/www/layout54/destinations.php - getDynamicCategoriesAndPackages (7) >> /var/www/vhosts/optitravel.net/httpdocs/optitravel/includes/classes/apis/optipackage.inc.php - getDynCats (9042) >> /var/www/vhosts/optitravel.net/httpdocs/optitravel/includes/classes/apis/dyn_cats.inc.php - select (73) >> /var/www/vhosts/optitravel.net/httpdocs/optitravel/includes/classes/database/class_db_handler.php - execute (429)