In the jQ theme, the file with the issue is header.php. (Above, it says headers.php, which is a typo.) header.php resides in the top level director for the theme, so the path to the file, if you have the theme installed, is <wordpress root directory>/wp-content/themes/jq/header.php
. As mentioned above, changing line 8 to read <?php if ( is_search() ) { ?><?php echo htmlentities($s,ENT_QUOTES,get_bloginfo('charset')); ?> - <?php bloginfo('name'); ?><?php } ?>
should fix the problem. The URL for the theme is https://www.ads-software.com/extend/themes/jq.