fix deprecated

config/packages/security.yaml

@@ -34,10 +34,10 @@ security:
             logout:
                 path: auth_logout
                 target: /
-            remember_me:
-                secret: '%kernel.secret%'
-                lifetime: 604800
-                path: /
+            # remember_me:
+            #     secret: '%kernel.secret%'
+            #     lifetime: 604800
+            #     path: /
 
     # Easy way to control access for large sections of your site
     # Note: Only the *first* access control that matches will be used

core/Bundle/CoreBundle.php

@@ -13,10 +13,11 @@ namespace App\Core\Bundle;
 
 use App\Core\DependencyInjection\CoreExtension;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
+use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
 
 class CoreBundle extends Bundle
 {
-    public function getContainerExtension()
+    public function getContainerExtension(): ?ExtensionInterface
     {
         return new CoreExtension();
     }

src/Bundle/AppBundle.php

@@ -13,10 +13,11 @@ namespace App\Bundle;
 
 use App\DependencyInjection\AppExtension;
 use Symfony\Component\HttpKernel\Bundle\Bundle;
+use Symfony\Component\DependencyInjection\Extension\ExtensionInterface;
 
 class AppBundle extends Bundle
 {
-    public function getContainerExtension()
+    public function getContainerExtension(): ?ExtensionInterface
     {
         return new AppExtension();
     }