<template name="blogAdmin">
  <div id="blog-admin">
    <div class="container">
      <div class="row">
        <div class="col-md-3">
          {{> blogAdminNav}}
        </div>
        <div class="col-md-9">
          <h1>
            Blog Admin
            <select class="for-filtering form-control">
              <option value="all">All Posts</option>
              <option value="mine">My Posts</option>
            </select>
          </h1>
          <div class="row">
            {{> blogAdminList}}
          </div>
      </div>
    </div>
  </div>
</template>

<template name="blogAdminList">
  <ul class="blog-admin-list">
    {{#each posts}}
      <li>
        <div class="col-md-6"><a href="{{pathFor 'blogAdminEdit'}}">{{title}}</a></div>
        <div class="col-md-3">{{authorName}}</div>
        {{#if published}}
          <div class="col-md-3">{{blogFormatDate createdAt}}</div>
        {{else}}
          <div class="col-md-3 blog-draft">DRAFT</div>
        {{/if}}
      </li>
    {{else}}
      <li><a href="{{pathFor 'blogAdminNew'}}">Create the first blog</a></li>
    {{/each}}
  </ul>
</template>

<template name="blogAdmin">
  <div id="blog-admin">
    <div class="container">
      <div class="row">
        <div class="col-md-3">
          {{> blogAdminNav}}
        </div>
        <div class="col-md-9">
          <h1>
            Blog Admin
            <select class="for-filtering form-control">
              <option value="all">All Posts</option>
              <option value="mine">My Posts</option>
            </select>
          </h1>
          <div class="row">
            {{> blogAdminList}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<template name="blogAdminList">
  <ul class="blog-admin-list">
    {{#each posts}}
      <li>
        <div class="col-md-6"><a href="{{pathFor 'blogAdminEdit'}}">{{title}}</a></div>
        <div class="col-md-3">{{authorName}}</div>
        {{#if published}}
          <div class="col-md-3">{{blogFormatDate createdAt}}</div>
        {{else}}
          <div class="col-md-3 blog-draft">DRAFT</div>
        {{/if}}
      </li>
    {{else}}
      <li><a href="{{pathFor 'blogAdminNew'}}">Create the first blog</a></li>
    {{/each}}
  </ul>
</template>

Add missing div close tag
Add missing div close tag