Middleware groups, define web group, configure routes file.

app/Http/routes.php

@@ -14,3 +14,18 @@
 Route::get('/', function () {
     return view('welcome');
 });
+
+/*
+|--------------------------------------------------------------------------
+| Web Routes
+|--------------------------------------------------------------------------
+|
+| This route group applies the "web" middleware group to every route
+| it contains. The "web" middleware group is defined in your HTTP
+| kernel and includes session state, CSRF protection, and more.
+|
+*/
+
+Route::group(['middleware' => 'web'], function () {
+    //
+});