A Database Error Occurred

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 'AND `cla_visible` = 1 AND cla_estado = 1 ORDER BY `cla_orden` ASC' at line 4

SELECT `cla_codigo` as codigo, `cla_nombre` as nombre, `cla_orden` as orden FROM (`clases`) WHERE `cla_linea` = AND `cla_visible` = 1 AND cla_estado = 1 ORDER BY `cla_orden` ASC

Filename: /home/coopelancomercia/public_html/modules/productos/models/get_clases_model.php

Line Number: 18