Working with CLI and lacking my namespace lessons inside

I am very new to WordPress development. I hit this error when i developering my very own class and namespace to do the life simpler to reuse my code on cross of platforms/frameworks.

I’ve added my CLI command like this

wp product:sync

And when i run my CLI command whitout my class its run because it shut, I can get entry to the internel WordPress capabilities didn’t working.

CLI_Controller.php

<?php

namespace WMSControllers;

use WMSControllersCLICLI_Products;

class CLI
{
    perform init()
    {
        add_action('cli_init', perform () {
            $product_cli = new CLI_Products();

            WP_CLI::add_command('product:sync', $product_cli->execute());
            WP_CLI::add_command('inventory:sync', $product_cli->hello_world());
            WP_CLI::add_command('order:sync', $product_cli->hello_world());
        });
    }
}

Product_Controller.php

<?php

namespace WMSControllersCLI;

use WMSControllersWMSApiAPIServiceItems;

class CLI_Products
{
    public perform hello_world()
    {
        WP_CLI::line('Howdy World!');
    }

    perform execute()
    {
        $api_items = new Gadgets();

        $args = array(
            'post_type'      => 'product',
            'posts_per_page' => 10
        );

        $loop = new WP_Query($args);
        whereas ($loop->have_posts()) {
            $loop->the_post();
            international $product;

            if ($product->get_sku()) {
                $merchandise = [
                    'sku' => $product->get_sku(),
                    'description' => get_the_title()
                ];

                print_r($merchandise);
            } else {
                echo 'Product lacking SKU quantity';
            }
        }

        $items->import($merchandise);
        wp_reset_query();
    }
}

So once I run this command its giving this error

PHP Deadly error: Uncaught Error: Class
‘WMSControllersWMSApiAPIServiceItems’ not present in
/var/www/frontend/wp-content/plugins/wordpress-woocommerce-plugin/src/Controllers/CLI/Product_Controller.php:16
Stack hint:
#0 /var/www/frontend/wp-content/plugins/wordpress-woocommerce-plugin/src/Controllers/CLI_Controller.php(14):
WMSControllersCLICLI_Products->execute()

So its appear to be the principle file didn’t load success, is there a method or work a spherical to load customized class/namespaces inside my CLI instructions?