diff --git a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
index b5bb52a17f..3e60b3fc6b 100644
--- a/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
+++ b/src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php
@@ -100,7 +100,6 @@ use Symfony\Component\Serializer\Encoder\DecoderInterface;
 use Symfony\Component\Serializer\Encoder\EncoderInterface;
 use Symfony\Component\Serializer\Mapping\ClassDiscriminatorFromClassMetadata;
 use Symfony\Component\Serializer\Normalizer\ConstraintViolationListNormalizer;
-use Symfony\Component\Serializer\Normalizer\DateIntervalNormalizer;
 use Symfony\Component\Serializer\Normalizer\DenormalizerInterface;
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
@@ -226,7 +225,7 @@ class FrameworkExtension extends Extension
 
         if ($this->isConfigEnabled($container, $config['session'])) {
             if (!\extension_loaded('session')) {
-                throw new \LogicException('PHP extension "session" is required.');
+                throw new LogicException('Session support cannot be enabled as the session extension is not installed. See https://www.php.net/session.installation for instructions.');
             }
 
             $this->sessionConfigEnabled = true;
@@ -1433,10 +1432,6 @@ class FrameworkExtension extends Extension
     {
         $loader->load('serializer.xml');
 
-        if (!class_exists(DateIntervalNormalizer::class)) {
-            $container->removeDefinition('serializer.normalizer.dateinterval');
-        }
-
         if (!class_exists(ConstraintViolationListNormalizer::class)) {
             $container->removeDefinition('serializer.normalizer.constraint_violation_list');
         }
diff --git a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
index fab27d4897..f2bd099182 100644
--- a/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
+++ b/src/Symfony/Bundle/FrameworkBundle/Tests/DependencyInjection/FrameworkExtensionTest.php
@@ -1194,10 +1194,6 @@ abstract class FrameworkExtensionTest extends TestCase
 
     public function testDateIntervalNormalizerRegistered()
     {
-        if (!class_exists(DateIntervalNormalizer::class)) {
-            $this->markTestSkipped('The DateIntervalNormalizer has been introduced in the Serializer Component version 3.4.');
-        }
-
         $container = $this->createContainerFromFile('full');
 
         $definition = $container->getDefinition('serializer.normalizer.dateinterval');
diff --git a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
index cc8b15ffdd..d0bd809579 100644
--- a/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
+++ b/src/Symfony/Bundle/SecurityBundle/Tests/DependencyInjection/Fixtures/php/merge.php
@@ -1,6 +1,6 @@
 <?php
 
-$this->load('merge_import.php', $container);
+$this->load('merge_import.php');
 
 $container->loadFromExtension('security', [
     'providers' => [
diff --git a/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php b/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
index cdfb613593..d2804de857 100644
--- a/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
+++ b/src/Symfony/Component/Security/Guard/AbstractGuardAuthenticator.php
@@ -25,8 +25,7 @@ abstract class AbstractGuardAuthenticator implements AuthenticatorInterface
      * Shortcut to create a PostAuthenticationGuardToken for you, if you don't really
      * care about which authenticated token you're using.
      *
-     * @param UserInterface $user
-     * @param string        $providerKey
+     * @param string $providerKey
      *
      * @return PostAuthenticationGuardToken
      */
diff --git a/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php b/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
index 851241f08a..3ff5b13b83 100644
--- a/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
+++ b/src/Symfony/Component/Security/Guard/AuthenticatorInterface.php
@@ -37,8 +37,6 @@ interface AuthenticatorInterface extends AuthenticationEntryPointInterface
      *
      * If this returns false, the authenticator will be skipped.
      *
-     * @param Request $request
-     *
      * @return bool
      */
     public function supports(Request $request);
@@ -60,8 +58,6 @@ interface AuthenticatorInterface extends AuthenticationEntryPointInterface
      *
      *      return ['api_key' => $request->headers->get('X-API-TOKEN')];
      *
-     * @param Request $request
-     *
      * @return mixed Any non-null value
      *
      * @throws \UnexpectedValueException If null is returned