Please help me. For some reason, after I did an update for WordPress and Elementor, it failed to run the code inside FUNCTION.PHP

add_filter( 'body_class','my_body_classes' );
function my_body_classes( $classes ) {
    if (!wp_is_mobile()) {
        $classes[] = 'desktop';
    }
     
    return $classes;
     
}


function home_redirect() {
    if (is_page(4658) && wp_is_mobile()) {
        wp_redirect(get_permalink(5756));
    }
        
    if (is_page(5756) && !wp_is_mobile()) {
        wp_redirect(get_permalink(4658));
    }
}
add_action('template_redirect', 'home_redirect');