Admin side jquery is not loaded

If you want to load Jquery, wordpress already provides a handler for it (its also the one in /wp-includes/js/jquery/jquery.js):

    function load_admin_script(){
            wp_enqueue_script('jquery');
    }
    add_action('admin_enqueue_scripts','load_admin_script');

note that the jQuery in WordPress runs in noConflict mode.

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