Hello, I am having some issues trying to show images in my kanban view. I attach my code below, both, my model and my XML for the kanban view.

Model:

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

from odoo import models, fields, api

class Libro(models.Model):
     _name = 'libro'

     image = fields.Binary(attachment=True)
     name = fields.Char(string="Título")
     autor = fields.Many2one("autores", string="Autor")
     paginas = fields.Integer (string="Número de páginas")
     isbn = fields.Char(string="ISBN")
     catego = fields.Many2one ("categorias", string="Género")
     fecharetirada = fields.Date(string="Fecha de Retirada")

XML:

<record model="ir.ui.view" id="libro_kanban_view">
    <field name="name">libro.kanban.view</field>
    <field name="model">libro</field>
  <field name="type">kanban</field>
    <field name="arch" type="xml">
        <kanban>
            <field name="image"/>
            <field name="name"/>
            <field name="autor"/>
            <field name="isbn"/>
            <field name="paginas"/>
            <templates>
                <t t-name="kanban-box">
                    <div class="oe_kanban_vignette oe_semantic_html_override" style="background-color:#ff8800; border-radius:18px; border: 2px solid #7600d1">
                      <img t-att-src="kanban_image('libro','image',record.image.value)" class="oe_resource_picture"/>
                      <div class="oe_kanban_details">
                            <h4>
                                <a type="open">
                                  <t><font color="#7600d1"><field name="name"/></font></t> <font color="#a700d1">[<field name="isbn"/>]</font>
                                </a>
                            </h4>
                            <div name="tags"/>
                            <ul>
                              <li><font color="#7600d1"><b>Autor:</b></font> <font color="white"><field name="autor"/></font></li>
                              <li><font color="#7600d1"><b>Número de páginas:</b></font> <font color="white"><field name="paginas"/></font></li>
                            </ul>
                        </div>
                    </div>
                </t>
            </templates>
        </kanban>
    </field>
</record>

The thing is that I have seen many people using "record.id.value", but I don't know what it is, and I get an error if use it.

Thanks.