Need help with thumbnail images

I am trying to edit the automatically generated thumb on my wordpress blog, but when I edit the code the image comes up blank. Any ideas?

Here is the code: <?php $my_query = new WP_Query(‘showposts=1&offset=0&cat=6’); ?>

<?php while ($my_query->have_posts()) : $my_query->the_post(); ?>

<h4 class=”titlelink”>“><?php the_title(); ?></h4>

<div style=”align:top; margin:10px 0px 5px 0px;border: 1px solid #cccccc;”><?php vz_inloop(162,”,’read this item’); ?></div>

<?php wswwpx_content_extract ( ‘ ‘, 40, 22 ); ?>

<?php endwhile; ?>

The link to my site is, https://www.camanabaytimes.com/