Ocorreu um erro de banco de dados

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'IS NULL AND (`sindicatos` LIKE '%,15' OR `sindicatos` LIKE '%,15,%' OR `sindicat' at line 3

SELECT COUNT(*) AS `numrows` FROM `articles` WHERE IS NULL AND (`sindicatos` LIKE '%,15' OR `sindicatos` LIKE '%,15,%' OR `sindicatos` LIKE '15,%' OR `sindicatos` LIKE '15') AND `id_company` in (15,37) AND `id_status` = 1

Filename: models/Global_model.php

Line Number: 438