whatsapp_web_groups/whatsapp_web/models/whatsapp_account.py

import logging

from odoo import fields, models

_logger = logging.getLogger(__name__)

class WhatsAppAccount(models.Model):
    _inherit = ['whatsapp.account']

    whatsapp_web_url = fields.Char(string="WhatsApp Web URL", readonly=False, copy=False)