I wanted to change the text copy in my search.php and now

I wanted to change the text copy in my search.php and now my "Not Found" page is going to offsite "the website cannot display the page" error page. here is the code..... can you tell if I did something wrong?
* Search page
* @package SimpleMarket
* @subpackage Template
* @since SimpleMarket 1.0
<?php get_header(); ?>
<div id="content" role="main">
<?php if ( have_posts() ) : ?>
<header class="post-header">
<h1 class="post-title"><?php printf( __( 'Search Results for: %s', TEMPLATE_DOMAIN), '<span>' . get_search_query() . '</span>' ); ?></h1>
<?php while ( have_posts() ) : the_post();
get_template_part( 'content', get_post_format() );
else : ?>
<article id="post-0" class="post no-results not-found">
<header class="post-header">
<h2 class="post-title"><?php _e( 'Nothing Found', TEMPLATE_DOMAIN); ?></h2>
<div class="post-body">
<p><?php _e( 'Sorry, but nothing matched your search criteria. We are still adding products daily! We currently have over 250 items listed on our site and are adding 10-20 a day more. Let us know if you are looking for something you don't see or check back often to see what else we've added!Contact Mike at 817-938-7692 for immediate assistance.', TEMPLATE_DOMAIN); ?></p>
<?php get_search_form(); ?>
<?php endif; ?>
<?php get_sidebar(); ?>
<?php get_footer() ?>