Hi, Have this issue with Odoo 10 CE ( very old but we love it!)

My account_invoice.py looks like this 

import qrcode
import requests
import base64
import cStringIO

from odoo import api, fields, models, _


class AccountInvoice(models.Model):
_inherit = "account.invoice"

invoice_qr_code = fields.Binary(string="Invoice QR Code", attachment=True)
invoice_extension = fields.Char(string="Invoice Extension")
messages = fields.Text(string="Messages")
total_amount = fields.Float(string="Total Amount")

@api.multi
def action_datecs_access(self):
for record in self:
try:

 ......etc

and my account_invoice_view_inherit.xml looks like this;

"\ rel="ugc">ir\.ui\.view">
\ \ \ \ \ \ \ \ account.invoice.form
account.invoice














 

And i keep on getting this error;

ParseError: "Error while validating constraint Field `total_amount` does not exist 

The same happens for all the fields I had defined I the account_invoice.py  

I use notepad ++ an the indentation looks ok.  Kindly help help help!

Regards,

Austin