Need help generating a category link

This code outputs a category image and title. I need them to link to individual category pages. I’ve tried the_permalink and get_category_link but neither worked for me.

<?php
$catTerms = get_terms('product_cat', array('hide_empty' => 0, 'orderby' => 'ASC', 'child_of'=>'7'));
foreach($catTerms as $catTerm) : ?>
<?php $thumbnail_id = get_woocommerce_term_meta( $catTerm->term_id, 'thumbnail_id', true );
			// get the image URL
			$image = wp_get_attachment_url( $thumbnail_id );  ?>
			<div class="col-md-4 col-xs-2">

<a href="<?php the_permalink(); ?>"><img src="<?php echo $image; ?>" width="100%" /></a>
<h4 class="prod-title"><?php echo $catTerm->name; ?></h4>
</div>
</div>
<?php endforeach; ?>