Shopware 6 - template not registered

I have been following The developer training (SW6).

It seems like the author skipped some important information. My question is why footer.html.twig, footer was not visible in case of video but in my case it is displayed.

Did anyone encounter the same issue?

A few things

• make sure your plugin is installed and active
• always make sure to clear the cache, e.g psh cache within the dev template. It's a common mistake to not clear the cache, while working with views
• you should extend from the core twig file e.g

{% sw_extends '@Storefront/storefront/layout/footer/footer.html.twig' %}
    
{% block layout_footer_inner_container %}
   TEST
{% endblock %}