Facebook Like Code Error-The reference to entity "appId" must end withthe ';' delimiter

The Error is this-

 Error parsing XML, line 658, column 62: The reference to entity "appId" must end with the ';' delimiter.

When you add the Facebook like button in your blogger blog,you have to add three codes in your blog as shown below-

The cause of error is the first code which is an Javascript to get Rid of the error Just paste the below code in place of it-

<div id="fb-root"></div>
<script>
window.fbAsyncInit = function() {
    FB.init({
      appId      : 'YOUR_APP_ID', // App ID
      status     : true, // check login status
      cookie     : true, // enable cookies to allow the server to access the session
      xfbml      : true  // parse XFBML
    });
    // Additional initialization code here
  };
  // Load the SDK Asynchronously
  (function(d){
     var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
     if (d.getElementById(id)) {return;}
     js = d.createElement('script'); js.id = id; js.async = true;
     js.src = "//connect.facebook.net/en_US/all.js";
     ref.parentNode.insertBefore(js, ref);
   }(document));
</script>

Remember to replace the Your App Id with your App id and paste it and you have done.

References: http://www.techparadise.info