List of Images

Your error is saying $images is not found,

Before using a foreach loop you should at least check the item is set.

PHP Code:

<?php if($images)  ?>
   <?php foreach ($images as $image) { ?>
      // do loop
   <?php } ?>
<?php } else { ?>
   // deal with no images found
<?php } ?>

So the query you are using to define images does not seem to be working.

Hope that helps,

Best wishes,

Paul.