if (!isset($conn)) {
    require_once __DIR__ . '/db_connect.php';
}
<br />
<b>Fatal error</b>:  Cannot redeclare getSiteSettings() (previously declared in /home/vdprtfyc/public_html/includes/functions.php:245) in <b>/home/vdprtfyc/public_html/includes/header.php</b> on line <b>11</b><br />