I'm trying to make my own custom report for the equipment.

I've created the report:
https://i.imgur.com/LAj12ef.png
​
And made a template:
https://i.imgur.com/W9s8QZM.png

I also performed an export on this template to get external ID like this:
https://www.youtube.com/watch?v=feZ64VGJCpk

And edited it the Model Data like this:
https://i.imgur.com/h7F2wum.png

But now when I'm trying to print the report I get this error:
​https://pastebin.com/6TnE9FA2

What is wrong?

EDIT:
​It turned out that the problem is with example template from Odoo documentation:
https://www.odoo.com/documentation/12.0/reference/reports.html​
​
When I changed it to something like this:

<?xml version="1.0"?>
<t t-name="web.equipment_report">
        <t t-call="web.html_container">
            <t t-set="o" t-value="res_company"/>
            <t t-call="web.external_layout">
                <div class="page">
                    <p>This is a sample of an external report.</p>
                </div>
            </t>
        </t>
    </t>
​

It is now somewhat working.