Unknown column 'cost_of_product' in 'field list'

SELECT pkProductID,fkUserID,FobPriceUnit,MinOrderUnit,ParentCategoryID,ChildCategoryID,MinOrderOther,ProductCode,ProductName,ListingDescription,ProductKeyword,ProductDetails,DetailedDescription,min_order,MinOrderUnit,fob,fob1,FobPrice,FobPriceUnit,port,payment_terms,supply_ability,delivery_time,Packaging_details,Product_Image,ProductImageColor1,ProductImage2,ProductImageColor2,ProductImage3,ProductImageColor3,ProductImage4,ProductImageColor4,ProductImage5,ProductImageColor5,CompanyVideoEmbedCode1,CompanyVideoEmbedCode2,CompanyVideoEmbedCode3,CompanyVideoEmbedCode4,CompanyVideoEmbedCode5,SupplyTime,SupplyUnit,SupplyOther,brand_name,CoverMaterial,model_no,size,type,material,shape,PlaceOfOrigin,min_quantity,pkUserID,PackingPouch,UserBusinessName,specification,ProductColourOptions,cost_of_product,package_for_export FROM smart_product_posting AS P LEFT JOIN users AS U ON U.pkUserID = P.fkUserID WHERE pkProductID =318