title: Imagick SVG to JPG error no decode delegate
body: <p>I have tried many different solutions, but cannot use Imagick::readImageBlob, any help would be appreciated.</p>
  
  <p>Error message:</p>
  
  <pre><code>Caught exception: no decode delegate for this image format `' @ error/blob.c/BlobToImage/364
  </code></pre>
  
  <p>Code:</p>
  
  <pre><code>$svg = file_get_contents($this-&gt;svg);
  $image = new Imagick();
  $image-&gt;readImageBlob($svg);
  //...
  </code></pre>
  
  <p>SVG:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8" standalone="no"?&gt; 
      &lt;svg xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg" version="1.1" width="928" height="933" id="parent"&gt;
  
          &lt;image width="928" height="933" xlink:href="image.jpg" &gt;&lt;/image&gt;
  
          &lt;path id="path1" fill="none" d="M100,656.5c-105.1-200.5-28.1-448,172-553s447.5-27.5,552.6,173s28.1,448-172,553 S205.1,856.9,100,656.5z"/&gt;
          &lt;text text-anchor="middle"&gt;
              &lt;textPath xlink:href="#path1" startOffset="33.3333%"&gt;
                  &lt;tspan&gt;top&lt;/tspan&gt;
              &lt;/textPath&gt;
          &lt;/text&gt;
  
          &lt;path id="path2" fill="none" d="M121.8,264.8C10.2,453.3,72.2,696.3,260.3,807.7s431,48.9,542.6-139.5 s49.5-431.5-138.5-542.8S233.3,76.4,121.8,264.8z"/&gt;
          &lt;text text-anchor="middle"&gt;
          &lt;textPath xlink:href="#path2" startOffset="33.3333%"&gt;
              &lt;tspan&gt;bund&lt;/tspan&gt;&lt;/textPath&gt;
          &lt;/text&gt;
      &lt;/svg&gt;
  </code></pre>