SUPER URGENT FIX - Wordpress Header Fatal Error : im getting this error on my page "Fatal error: Can't use function return value in write context in /home/shamsavh/public_html/wp-content/themes/bleute/header.php on line 35"

the code at line 35 is "$header_setting = '';" below is detailed code, can someone please help


        <!DOCTYPE html>
    <!--[if lt IE 7 ]><html class="ie ie6" <?php language_attributes(); ?>> <![endif]-->
    <!--[if IE 7 ]><html class="ie ie7" <?php language_attributes(); ?>> <![endif]-->
    <!--[if IE 8 ]><html class="ie ie8" <?php language_attributes(); ?>> <![endif]-->
    <!--[if (gte IE 9)|!(IE)]><!-->
    <html <?php language_attributes(); ?>> <!--<![endif]-->
    <head>
        <meta charset="<?php bloginfo( 'charset' ); ?>" />
        <!--[if lt IE 9]>
            <script src="<?php echo esc_url( get_template_directory_uri() ); ?>/asset/js/html5.js"></script>
        <![endif]-->
        <!-- Mobile Specific Metas
        ================================================== -->
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <link rel="profile" href="http://gmpg.org/xfn/11" />
    <?php wp_head();?>
    </head>
    <body <?php body_class(); ?>>
    <div id="bleute-mobile-menu">
        <button>
            <i></i>
            <i></i>
            <i></i>
        </button>
        <?php wp_nav_menu( array( // show menu mobile
                'theme_location' => 'mobile-menu',
                'container' => 'nav',
                'container_class' => 'mobile-menu'
         ) ); ?>
    </div>
    <?php
    if (!is_404()) {
        ***$header_setting = '';***
        $header_page_setting = get_post_meta( get_the_ID(), '_beautheme_custom_header', TRUE );
        if (!empty(bleute_GetOption('header-type'))) {
            $header_setting =  bleute_GetOption('header-type');
        }
        if ($header_page_setting) {
            $header_setting = $header_page_setting;
        }
        if (empty($header_setting)) {
            $header_setting = 'none-slide';
        }
        if(is_search() == 'true'){
            $header_setting = 'none-slide';
        }   
        get_template_part('templates/header', $header_setting);
        if (bleute_GetOption('enable-fixed') == '2') {
            get_template_part('templates/header-stick', $header_setting);
        }
    ?>
    <?php }?>