symfony
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php‎
Lines changed: 1 addition & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/Compiler/UnusedTagsPass.php‎
Lines changed: 1 addition & 0 deletions
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php‎
Lines changed: 10 additions & 1 deletion b/‎src/Symfony/Bundle/FrameworkBundle/DependencyInjection/FrameworkExtension.php‎
Lines changed: 10 additions & 1 deletion
diff --git a/‎src/Symfony/Bundle/FrameworkBundle/Resources/config/web.php‎
Lines changed: 8 additions & 0 deletions b/‎src/Symfony/Bundle/FrameworkBundle/Resources/config/web.php‎
Lines changed: 8 additions & 0 deletions
@@ -46,6 +46,7 @@ class UnusedTagsPass implements CompilerPassInterface
         'container.stack',
         'controller.argument_value_resolver',
         'controller.service_arguments',
+        'controller.targeted_value_resolver',
         'data_collector',
         'event_dispatcher.dispatcher',
         'form.type',
 
@@ -157,6 +157,7 @@
 use Symfony\Component\Serializer\Normalizer\NormalizerInterface;
 use Symfony\Component\Serializer\Normalizer\ProblemNormalizer;
 use Symfony\Component\Serializer\Normalizer\UnwrappingDenormalizer;
+use Symfony\Component\Serializer\Serializer;
 use Symfony\Component\Serializer\SerializerAwareInterface;
 use Symfony\Component\Stopwatch\Stopwatch;
 use Symfony\Component\String\LazyString;
@@ -357,11 +358,19 @@ public function load(array $configs, ContainerBuilder $container)
         $container->getDefinition('exception_listener')->replaceArgument(3, $config['exceptions']);
 
         if ($this->readConfigEnabled('serializer', $container, $config['serializer'])) {
-            if (!class_exists(\Symfony\Component\Serializer\Serializer::class)) {
+            if (!class_exists(Serializer::class)) {
                 throw new LogicException('Serializer support cannot be enabled as the Serializer component is not installed. Try running "composer require symfony/serializer-pack".');
             }
 
             $this->registerSerializerConfiguration($config['serializer'], $container, $loader);
+        } else {
+            $container->register('.argument_resolver.request_payload.no_serializer', Serializer::class)
+                ->addError('You can neither use "#[MapRequestPayload]" nor "#[MapQueryString]" since the Serializer component is not '
+                    .(class_exists(Serializer::class) ? 'enabled. Try setting "framework.serializer" to true.' : 'installed. Try running "composer require symfony/serializer-pack".')
+                );
+
+            $container->getDefinition('argument_resolver.request_payload')
+                ->replaceArgument(0, new Reference('.argument_resolver.request_payload.no_serializer', ContainerInterface::RUNTIME_EXCEPTION_ON_INVALID_REFERENCE));
         }
 
         if ($propertyInfoEnabled) {
 
@@ -17,6 +17,7 @@
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DateTimeValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\DefaultValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestAttributeValueResolver;
+use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestPayloadValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\RequestValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\ServiceValueResolver;
 use Symfony\Component\HttpKernel\Controller\ArgumentResolver\SessionValueResolver;
@@ -61,6 +62,13 @@
             ])
             ->tag('controller.argument_value_resolver', ['priority' => 100, 'name' => DateTimeValueResolver::class])
 
+        ->set('argument_resolver.request_payload', RequestPayloadValueResolver::class)
+            ->args([
+                service('serializer'),
+                service('validator')->nullOnInvalid(),
+            ])
+            ->tag('controller.targeted_value_resolver', ['name' => RequestPayloadValueResolver::class])
+
         ->set('argument_resolver.request_attribute', RequestAttributeValueResolver::class)
             ->tag('controller.argument_value_resolver', ['priority' => 100, 'name' => RequestAttributeValueResolver::class])