Best silk pavadai Online shopping

Error performing query: SELECT S.name as name, S.id as sid,P.sku FROM pp_size AS S LEFT JOIN pp_price_cost AS P ON P.size_id = S.id WHERE P.size_id in () AND P.product_id =78 AND P.qty > 0 ORDER BY S.id ASC :
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 P.product_id =78 AND P.qty > 0 ORDER BY S.id ASC' at line 4