Adapting Latest Loop to Display Based on Tag(s)

Here’s my tags.hbs template. Only change I’ve made is to hard code a class definition for the div that wraps around the loop.

{{!< default}}

<main class="site-main">

    {{#tag}}
    <section class="taxonomy">

        {{#if feature_image}}
            <div class="taxonomy-media u-placeholder square">
                <img class="u-object-fit" src="{{img_url feature_image size="s"}}" alt="{{name}}">
            </div>
        {{/if}}

        <header class="single-header gh-canvas">
            <h1 class="single-title">{{name}}</h1>
            {{#if description}}
                <div class="single-excerpt">{{description}}</div>
            {{/if}}
        </header>

    </section>
    {{/tag}}

    <div class="post-feed expanded gh-feed gh-canvas">
        {{#foreach posts}}
            {{> "loop"}}
        {{/foreach}}
    </div>

    {{pagination}}

</main>

Also, today, my two /features/newsletters and /features/extras URLs now generate 400 errors. Despite everything being exactly the same. I’m also using hosted Ghost Pro. While I have a VPS and other sites, for this project I don’t want that hassle.