Ghost/ghost/admin/app/templates/error.hbs

<div class="gh-view">

    <section class="flex flex-column items-center flex-grow justify-center h-100 nt10">
        <div class="absolute error-background nudge-right--5">
            {{svg-jar "desert" class="error-background absolute"}}
            <div class="traveler-1">{{svg-jar "tumbleweed" class="w6 h6 absolute bouncer-1"}}</div>
            <div class="traveler-2">{{svg-jar "tumbleweed" class="w11 h11 absolute bouncer-2"}}</div>
        </div>
        <div class="mt5 tc">
            <h1 class="midlightgrey error-code-size fw6">{{this.code}}</h1>
            <h2 class="midlightgrey f4 fw3">{{this.message}}</h2>
        </div>
    </section>

    {{#if this.stack}}
        <section class="error-stack">
            <h3>Stack Trace</h3>
            <p><strong>{{this.message}}</strong></p>
            <ul class="error-stack-list">
                {{#each this.stack as |item|}}
                    <li>
                        at
                        {{#if item.function}}<em class="error-stack-function">{{item.function}}</em>{{/if}}
                        <span class="error-stack-file">({{item.at}})</span>
                    </li>
                {{/each}}
            </ul>
        </section>
    {{/if}}
</div>