some case, your hosting restricted access direct from plugins folder. So, You can’t access your kitchen view page. To resolve it, pls follow this guide to change kitchen view URL

1. COPY your folder : your_wordpress/wp-content/plugins/woocommerce-openpos/kitchen to your_wordpress/
2. Edit file your_wordpress/kitchen/index.php . update the base dir ( wordpress path) at those line

#$base_dir = dirname(__DIR__);  // uncomment and change this if use your_domain.com/kitchen

3. add this shortcode to your theme/functions.php or use any snippet code plugin to update kitchen url

add_filter('op_kitchen_url',function(){
    return 'yourwordpressdomain/kitchen'; // change to yourwordpressdomain to your wordpress domain

});

Now , open admin/pos/outlet and click kitchen view screen to see the effect.