Hi 

I keep getting this error

what am i doing wrong?????!??!!?!

Field `drawing` does not exist

Error context:
View `product.product.form.inherit`
[view_id: 853, xml_id: n/a, model: product.product, parent_id: 388]
None" while parsing file:/c:/program files (x86)/odoo 12.0/server/odoo/addons/product_inherit/views/product_inherit.xml:3, near
<record id="view_product_form_inherit" model="ir.ui.view">
			<field name="name">product.product.form.inherit</field>
			<field name="model">product.product</field>
			<field name="inherit_id" ref="product.product_normal_form_view"/>
			<field name="arch" type="xml">
				<xpath expr="//field[@name='default_code']" position="after">
					<field name="drawing"/>
				</xpath>
			</field>
		</record>


here is my code

Model

# -*- coding: utf-8 -*-

from odoo import models, fields, api

class product_product(models.Model):
   _name = "product.product"
   _description = "Product"
   _inherit = 'product.product'
   _columns = {
      'drawing' : fields.binary('Drawing'),
        'date_modify' : fields.datetime('Date Modified')
   }

product_product()



xml file


<odoo>
    <data>
        <record id="view_product_form_inherit" model="ir.ui.view">
         <field name="name">product.product.form.inherit</field>
         <field name="model">product.product</field>
         <field name="inherit_id" ref="product.product_normal_form_view"/>
         <field name="arch" type="xml">
            <xpath expr="//field[@name='default_code']" position="after">
               <field name="drawing"/>
            </xpath>
         </field>
      </record>
    </data>
</odoo>