A Database Error Occurred

Error Number: 1064

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 ') AND `useing` = 'y'' at line 3

SELECT * FROM `_zz_tour_list` WHERE `nation` IN() AND `useing` = 'y'

Filename: models/Tourdb.php

Line Number: 446