first upload all files

Modules/Order/Providers/EventServiceProvider.php

@@ -0,0 +1,20 @@
+<?php
+
+namespace Modules\Order\Providers;
+
+use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
+
+class EventServiceProvider extends ServiceProvider
+{
+    /**
+     * The event listener mappings for the application.
+     *
+     * @var array
+     */
+    protected $listen = [
+        \Modules\Order\Events\OrderStatusChanged::class => [
+            \Modules\Order\Listeners\SendOrderStatusChangedEmail::class,
+            \Modules\Order\Listeners\SendOrderStatusChangedSms::class,
+        ],
+    ];
+}

Modules/Order/Providers/OrderServiceProvider.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace Modules\Order\Providers;
+
+use Modules\Support\Traits\AddsAsset;
+use Illuminate\Support\ServiceProvider;
+
+class OrderServiceProvider extends ServiceProvider
+{
+    use AddsAsset;
+
+    /**
+     * Bootstrap the application services.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        $this->addAdminAssets('admin.orders.show', ['admin.order.css', 'admin.order.js']);
+    }
+}