My SQL Errors Debug..

MySQL Error : 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 'N_Class) order By N_Order ASC,N_SerialNo ASC LIMIT 1' at line 1
Query Result : select * from artware_products where N_YN = 1 and find_in_set(,N_Class) order By N_Order ASC,N_SerialNo ASC LIMIT 1