first upload all files

Themes/Storefront/Http/Controllers/ProductGridController.php

@@ -0,0 +1,17 @@
+<?php
+
+namespace Themes\Storefront\Http\Controllers;
+
+class ProductGridController extends ProductIndexController
+{
+    /**
+     * Display a listing of the resource.
+     *
+     * @param int $tabNumber
+     * @return \Illuminate\Http\Response
+     */
+    public function index($tabNumber)
+    {
+        return $this->getProducts("storefront_product_grid_section_tab_{$tabNumber}");
+    }
+}