By adding a template we can get a page in v11 and how to create a page in v12? Any idea...

v11 example:

<template id="thanks_try_now_page_template">
    <t t-call="website.layout">
        <div id="wrap"> 
  	    <div class="container text-center">
                <div class ="flex-container">
 		    <div class="form6">
 		        <h2 class="text-center"> Thank You</h2><br />
 	                <h4 class="text-center"> Use the below link and credential to login into odoo</h4>
 	                <h4><strong>Odoo 11 : <a href="https://demo.odoo.com/"  target="_blank"><span> demo.odoo.com</span><i class="fa fa-link"></i></a></strong></h4><br />
 		    </div>
                 </div>
 	    </div>
 	</div>
     <!-- === Snippets' area === -->
         <div class="oe_structure" /></div>
     </t>
  </template>
    
    
<record id="thanks_try_now_page" model="website.page">
    <field name="name">Thanks try now page</field>
    <field name="website_published">True</field>
    <field name="url">/thanks_try_now</field>
    <field name="view_id" ref="thanks_try_now_page_template"/>
</record>

    
Facing internal error on migrating this from v11 to v12.Any idea how to solve in v12 using template to create a page ?
For V12?