alainsch

Thanks Rami for the clarification, I was struggling to find a simple solution to load jQuery again in the theme and don’t need worry about the custom codes and the plugin.
I use this code that I found in other thread and works for me:

function load_scripts(){
    wp_enqueue_script('jquery'); # Loading the WordPress bundled jQuery version.
}
add_action('wp_enqueue_scripts', 'load_scripts');