Widgets are not displaying in my theme

Change Id of register sidebar. i have tested and after changing id it is working fine. let me know if this solve you issue.

function universalSearch() {
    register_sidebar( array(
        'name'          => 'Universal Search',
        'id'            => 'universal-search-field',
        'before_widget' => '<div class="chw-widget">',
        'after_widget'  => '</div>',
        'before_title'  => '<h2 class="chw-title">',
        'after_title'   => '</h2>',
    ) );

     register_sidebar( array(
        'name'          => 'Universal Search1',
        'id'            => 'universal-search-field-1',
        'before_widget' => '<div class="chw-newsletter">',
        'after_widget'  => '</div>',
        'before_title'  => '<h2 class="chw-newsletter_title">',
        'after_title'   => '</h2>',
    ) );
}
add_action( 'widgets_init', 'universalSearch' );

Displaying on page

if ( is_active_sidebar('universal-search-field')) : 
    dynamic_sidebar('universal-search-field');
endif;

if ( is_active_sidebar('universal-search-field-1')) : 
    dynamic_sidebar('universal-search-field-1');
endif;