I'm trying to inherit res.partner
and i'm trying to add new fields to my res.partner but error occur
This is the code:

from odoo import models , fields,api,_

class ResPartner(models.Model):
    _inherit='res.partner'
    is_student=fields.Boolean(string="Is Student?")
    birth_date=fields.Date(string="Birth Date")
This is the error:

psycopg2.errors.UndefinedColumn: column res_partner.is_student does not exist

LINE 1: ...uid", "res_partner"."write_date" AS "write_date", "res_partn...