Fix php error

src/Controller/MainController.php

@@ -1,19 +1,18 @@
 <?php
 
-
 namespace App\Controller;
 
-use Symfony\Component\HttpFoundation\Request;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
 
 class MainController extends AbstractController
 {
-
     /**
      * @Route("/loginAppSaml", name="login_app_saml")
      */
     public function loginAppSaml(Request $request)
     {
-        return new Response("saml");
+        return new Response('saml');
     }
 }