Error when upgrading Templating API V1 to V2 internal property

Thanks that was super helpful! We were able to bring the errors down to just 2. We are looping for each sections object and declaring an if statement in line 16 of the category_page.hbs file and declaring an if statement using the categories object and if statement on line 23 with the articles.internal property. We also changed the property to article.internal and are still getting the following error message:

not possible to access `internal` in `articles.internal`"

Do we need to declare articles in our pages? Looking at the API documentation, the objects we are using are related object so we are assuming we can use this property.https://developer.zendesk.com/api-reference/help_center/help-center-templates/category_page/Attached are the pages in our theme.

<link href="https://fonts.googleapis.com/css?family=Nunito+Sans" rel="stylesheet">

<nav class="sub-nav">
  {{breadcrumbs}}
  {{search}}
</nav>

<h1 class="page-header">{{category.name}}</h1>

<p>{{category.description}}</p>

<div class="section-tree">
  {{#each sections}}
    <section class="section">
      <h3>
        {{#if articles.internal}}
          <span class="visibility-internal" data-title="{{t 'internal'}}">
            <span class="visibility-internal-icon"></span>
          </span>
        {{/if}}
        <a href="{{url}}">{{name}}</a>
      </h3>
      {{#if articles}}
        <ul class="article-list">
          {{#each articles}}
            <li {{#if promoted}} class="article-promoted" {{/if}}>
              {{#if promoted}}
                <span data-title="{{t 'promoted'}}">★</span>
              {{/if}}
              <a href="{{url}}">{{title}}</a>
            </li>
          {{/each}}
          {{#if more_articles}}
            <a href="{{url}}" class="see-all-articles">
              {{t 'show_all_articles' count=article_count}}
            </a>
          {{/if}}
        </ul>
      {{else}}
        <i class="section-empty">
          <a href="{{url}}">{{t 'empty'}}</a>
        </i>
      {{/if}}
    </section>
  {{else}}
    <i class="category-empty">
      <a href="{{category.url}}">{{t 'empty'}}</a>
    </i>
  {{/each}}
</div>


<link href="https://fonts.googleapis.com/css?family=Nunito+Sans" rel="stylesheet">

<section class="knowledge-base">
  {{#if categories}}
    <div class="category-tree">
      {{#each categories}}
        <section class="category">
          {{#if ../has_multiple_categories}}
            <h2><a href="{{url}}">{{name}}</a></h2>
          {{/if}}
          {{#is name 'General'}}
            <section class="section">
              <h3>Quick Links</h3>
              <ul class="article-list">
                <li><a href="/hc/en-us/requests">My Tickets</a></li>
                <li><a href="/hc/en-us/requests/new">Submit New Request</a></li>
              </ul>
            </section>
          {{/is}}
          {{#each sections}}
            <section class="section">
              <h3>
                {{#if articles.internal}}
                  <span class="visibility-internal" data-title="{{t 'internal'}}">
                    <span class="visibility-internal-icon"></span>
                  </span>
                {{/if}}
                <a href="{{url}}">{{name}}</a>
              </h3>
              {{#if articles}}
                <ul class="article-list">
                  {{#each articles}}
                    <li {{#if promoted}} class="article-promoted" {{/if}}>
                      {{#if promoted}}
                        <span data-title="{{t 'promoted'}}">★</span>
                      {{/if}}
                      <a href="{{url}}">{{title}}</a>
                    </li>
                  {{/each}}
                </ul>
                {{#if more_articles}}
                  <a href="{{url}}" class="see-all-articles">
                    {{t 'show_all_articles' count=article_count}}
                  </a>
                {{/if}}
              {{else}}
                <i class="section-empty">
                  <a href="{{url}}">{{t 'empty'}}</a>
                </i>
              {{/if}}
            </section>
          {{else}}
            <i class="category-empty">
              <a href="{{url}}">{{t 'empty'}}</a>
            </i>
          {{/each}}

          {{#if more_sections}}
            <div>
              <a href="{{url}}">{{t 'see_all_sections'}}</a>
            </div>
          {{/if}}
        </section>
      {{/each}}
      {{pagination}}
    </div>
  
  {{/if}}
  
</section>