add app url to the config and set it to laravel.dev

laravel/.env.example

@@ -1,5 +1,6 @@
 APP_ENV=local
 APP_DEBUG=true
+APP_URL=http://laravel.dev
 APP_KEY=SomeRandomString
 
 CACHE_DRIVER=file

laravel/config/app.php

@@ -26,7 +26,7 @@ return [
     |
     */
 
-    'url' => 'http://localhost',
+    'url' => env('APP_URL', 'http://localhost'),
 
     /*
     |--------------------------------------------------------------------------