widget menu not showing in wordpress

1/**
2 * In functions.php
3 * Register our sidebars and widgetized areas.
4 *
5 */
6function arphabet_widgets_init() {
7
8    register_sidebar(array(
9        'name' => 'My_Widgtet_Area',
10        'id' => 'partner-slide',
11        'before_widget' => '<div>',
12        'after_widget' => '</div>',
13        'before_title' => '<h2 class="rounded">',
14        'after_title' => '</h2>',
15    ));
16}
17
18add_action('widgets_init', 'arphabet_widgets_init');