first upload all files

Modules/Attribute/Providers/EventServiceProvider.php

@@ -0,0 +1,27 @@
+<?php
+
+namespace Modules\Attribute\Providers;
+
+use Modules\Product\Entities\Product;
+use Modules\Attribute\Listeners\SaveProductAttributes;
+use Modules\Attribute\Http\Requests\SaveProductAttributesRequest;
+use Illuminate\Foundation\Support\Providers\EventServiceProvider as ServiceProvider;
+
+class EventServiceProvider extends ServiceProvider
+{
+    /**
+     * Perform any actions required after the model boots.
+     *
+     * @return void
+     */
+    public function boot()
+    {
+        parent::boot();
+
+        Product::saving(function () {
+            resolve(SaveProductAttributesRequest::class);
+        });
+
+        Product::saved(SaveProductAttributes::class);
+    }
+}