I want to print several id of a table but I get an error and I think it is because I try to show a computed field. I can only print one id at a time and not all. The error that appears is the following:

Error to render compiling AST ValueError: Expected singleton: project_rc.account (3, 4) Template: 252 Path: / templates / t / t / t / t / div / table / tfoot / tr [1] / th [2] / span Node: t-esc = "i.total_account_debit" />

The code is the following:

        <t t-call = "web.html_container">

            <t t-foreach = "docs" t-as = "i">

                <t t-call = "web.external_layout">

                    <div class = "page">

                 <t t-foreach = "i.detail_document_ids" t-as = "o">

                                <tr>

                                    <td>

                                        <span t-esc = "o.date" />

                                    </td>

                                    <td>

                                        <span t-esc = "o.razon_social_id.name" />

                                    </td>

                                    <td>

                                        <span t-esc = "o.total_debit" />

                                    </td>

                                    <td>

                                        <span t-esc = "o.total_credit" />

                                    </td>

                                </tr>

                            </t>

                            <tfoot>

                                <tr> <th colspan = "2" style = "text-align: center"> Total </th>

                                    <th style = "text-align: center"> <span t-esc = "i.total_account_debit" /> </th>

                                    <th style = "text-align: center"> <span t-esc = "i.total_account_credit" /> </th> </tr>

                                 <tr> <th colspan = "2" style = "text-align: center"> Balance </th>

                                  <th colspan = "2" style = "text-align: center"> <span t-esc = "i.balance" /> </th> </tr>

                            </tfoot>

table "account" py

title = fields.Char (string = "Name")

total_account_debit = fields.Float (string = "Total account must", compute = "_ total_account_debit")

total_account_credit = fields.Float (string = "Total account have", compute = "_ total_account_credit")

balance = fields.Float (string = "Balance", compute = "_ balance")