I'm trying to get name of product and  quotation number for each product  t in my report
but the error occurs , it said that line is an interger, so how can i get names of product for each line order
this is the function of print button:

def action_print_errors(self):
    domain=[]
    user=self.user
    date_from=self.date_from
    date_to=self.date_to

    domain+=[('user_id','=',user.id)]
    domain+=[('date_order','>=',date_from)]
    domain+=[('date_order','<=',date_to)]
    sales=self.env['sale.order'].search_read(domain)
    print(domain)
    data={
        'form':self.read()[0],
        'sales':sales
    }
    return self.env.ref('selling_errors.show_quotation_report').report_action(self,data=data)

this is the code of my table in report:

<tbody>
    <t t-foreach="sales" t-as="o">
        <t t-foreach="o['order_line']" t-as="line">
            <tr>
                <td>
                    <span t-esc="o['name']"/>
                </td>
                <td>
                    <span t-field="line.name"/>
                </td>
                <td></td>
                <td></td>
                <td></td>
            </tr>
        </t>
    </t>
</tbody>

this is the error:

ile "E:\odoo14\server\odoo\addons\base\models\ir_qweb.py", line 361, in _get_field
    field = record._fields[field_name]
AttributeError: 'int' object has no attribute '_fields'

Error to render compiling AST
AttributeError: 'int' object has no attribute '_fields'