Help needed to resolve there is no attribute X errors..

On my website http://www.dorffdesign.nl/ there is a problem. Ive put the FB Like button there and it worked fine for a while. But now its gone. So ive run

http://validator.w3.org/ on it and came up with the next errors:

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1. Image may be NSFW.
   Clik here to view.  Line 232, Column 32: there is no attribute "data-href"<div class="fb-like" data-href="http://www.dorffdesign.nl/" data-send="true" da…

   ✉  

    

2. Image may be NSFW.
   Clik here to view.  Line 232, Column 71: there is no attribute "data-send"…http://www.dorffdesign.nl/" data-send="true" data-width="450" data-show-faces=…

   ✉  

3. Image may be NSFW.
   Clik here to view.  Line 232, Column 89: there is no attribute "data-width"…orffdesign.nl/" data-send="true" data-width="450" data-show-faces="true"></div>

   ✉  

    

4. Image may be NSFW.
   Clik here to view.  Line 232, Column 111: there is no attribute "data-show-faces"…orffdesign.nl/" data-send="true" data-width="450" data-show-faces="true"></div>

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In dreamweaver ive use this code for the FB likke button:

<div id="fb-root"></div>

<script>(function(d, s, id) {

  var js, fjs = d.getElementsByTagName(s)[0];

  if (d.getElementById(id)) return;

  js = d.createElement(s); js.id = id;

  js.src = "//connect.facebook.net/nl_NL/all.js#xfbml=1";

  fjs.parentNode.insertBefore(js, fjs);

}(document, 'script', 'facebook-jssdk'));</script>

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<div class="fb-like" data-href="http://www.dorffdesign.nl/" data-send="true" data-width="450" data-show-faces="true"></div>

I really want to solve this so im hoping if you can point me into the right direction.

Regards