Failing fragment on Structured Data Testing Tool

snippet.html

<div vocab="http://schema.org" typeof="BlogPosting" resource="https://ruben.verborgh.org/blog/2016/06/22/querying-history-with-linked-data/">


<!-- Try adding and removing the line below: -->
  <meta property="publisher" resource="https://ruben.verborgh.org/profile/#me">


  <p resource="https://ruben.verborgh.org/profile/#me" typeof="Person">
    <span property="name">Ruben Verborgh</span>

<!-- Try adding and removing the line below: -->
    <meta property="logo" resource="https://ruben.verborgh.org/logo.png">

  </p>


  <img src="https://ruben.verborgh.org//images/blog/history_long.jpg" alt="" property="image" />
  <p property="headline">
    <a href="https://ruben.verborgh.org//blog/2016/06/22/querying-history-with-linked-data/" property="url">Querying history with Linked Data</a>
  </p>
  <p property="alternativeHeadline">
    <a href="https://ruben.verborgh.org//blog/2016/06/22/querying-history-with-linked-data/">Combining Triple Pattern Fragments with Memento to query previous dataset versions in the browser.</a>
  </p>
  <meta property="author" resource="https://ruben.verborgh.org/profile/#me">
  <meta property="datePublished dateModified" content="2016-06-22T17:30:00+02:00">
<p resource="https://ruben.verborgh.org/profile/#me" typeof="Person">
  <span property="name">Ruben Verborgh</span>
</p>
</div>

• Without publisher, it wants me to add a publisher.
• With publisher, it wants me to add a logo.
• With logo, it warns that logo is not allowed on a person.

Thanks!