Hello, I have a module with one2many field, which installed without any problems. But when I update the module generates a KeyError for that field .

invf = env[self.comodel_name]._fields[self.inverse_name]

KeyError: 'ubicacion'

The code is:

class res_partner(models.Model):
    _inherit = 'res.partner'
    movimientos_dispenser = fields.One2many('movimientos','ubicacion',domain=[('fecha_retiro','=',False)])

class Movimientos(models.Model):
    _name = 'movimientos'
    name = fields.Many2one('dispenser',domain=[('disponible','=',True)] , ondelete='restrict', string='Codigo de dispenser', required=True)
    ubicacion = fields.Many2one ('res.partner',domain=[('customer','=',True)], string="Ubicacion", required=True, ondelete="restrict")

Thank you for your help.