According to the Render Queue, you didn't tell AE where you wanted the rendered file to go. Very basic stuff.
Well, how do I do that smart one?
INsulting Dave won't help. My firewall won't allow access to your image so I'm assuming Dave's assessment is correct.
Open the AE help system and look up how to use the render queue. You must specify a location for the file. Click on the location text and you get a standard file dialog window.
Take a moment to download the AE help files so your system will search the PDF without needing internet access. And it's faster if it's a local document.