Fatal error: Uncaught Symfony\Component\DependencyInjection\Exception\InvalidArgumentException: Expected to find class "Symfony\Component\Validator\Constraints\UniqueValidator" in file "/www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/validator/Constraints/UniqueValidator.php" while importing services from resource "/www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/validator/Constraints/*Validator.php", but it was not found! Check the namespace prefix used with the resource. in /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/FileLoader.php:338 Stack trace: #0 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/FileLoader.php(129): Symfony\Component\DependencyInjection\Loader\FileLoader->findClasses('Symfony\\Compone...', '/www/htdocs/w00...', Array, NULL, '/www/htdocs/w00...') #1 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/Configurator/PrototypeConfigurator.php(72): Symfony\Component\DependencyInjection\Loader\FileLoader->registerClasses(Object(Symfony\Component\DependencyInjection\Definition), 'Symfony\\Compone...', '/www/htdocs/w00...', Array, '/www/htdocs/w00...') #2 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/Configurator/AbstractServiceConfigurator.php(47): Symfony\Component\DependencyInjection\Loader\Configurator\PrototypeConfigurator->__destruct() #3 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/Resources/config/validator.php(81): Symfony\Component\DependencyInjection\Loader\Configurator\AbstractServiceConfigurator->set('validator.expre...', 'Symfony\\Compone...') #4 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/PhpFileLoader.php(148): Symfony\Component\DependencyInjection\Loader\ProtectedPhpFileLoader::Symfony\Component\DependencyInjection\Loader\Configurator\{closure}(Object(Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator)) #5 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/PhpFileLoader.php(64): Symfony\Component\DependencyInjection\Loader\PhpFileLoader->executeCallback(Object(Closure), Object(Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator), '/www/htdocs/w00...') #6 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(1623): Symfony\Component\DependencyInjection\Loader\PhpFileLoader->load('validator.php') #7 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(487): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->registerValidationConfiguration(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder), Object(Symfony\Component\DependencyInjection\Loader\PhpFileLoader), true) #8 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php(81): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->load(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder)) #9 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.php(40): Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #10 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Compiler/Compiler.php(73): Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #11 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/ContainerBuilder.php(752): Symfony\Component\DependencyInjection\Compiler\Compiler->compile(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #12 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(495): Symfony\Component\DependencyInjection\ContainerBuilder->compile() #13 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(740): Symfony\Component\HttpKernel\Kernel->initializeContainer() #14 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(170): Symfony\Component\HttpKernel\Kernel->preBoot() #15 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php(35): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #16 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/autoload_runtime.php(29): Symfony\Component\Runtime\Runner\Symfony\HttpKernelRunner->run() #17 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/public/index.php(9): require_once('/www/htdocs/w00...') #18 {main} Next Symfony\Component\DependencyInjection\Exception\InvalidArgumentException: Expected to find class "Symfony\Component\Validator\Constraints\UniqueValidator" in file "/www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/validator/Constraints/UniqueValidator.php" while importing services from resource "/www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/validator/Constraints/*Validator.php", but it was not found! Check the namespace prefix used with the resource. in /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/FileLoader.php:338 Stack trace: #0 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/FileLoader.php(129): Symfony\Component\DependencyInjection\Loader\FileLoader->findClasses('Symfony\\Compone...', '/www/htdocs/w00...', Array, NULL, '/www/htdocs/w00...') #1 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/Configurator/PrototypeConfigurator.php(72): Symfony\Component\DependencyInjection\Loader\FileLoader->registerClasses(Object(Symfony\Component\DependencyInjection\Definition), 'Symfony\\Compone...', '/www/htdocs/w00...', Array, '/www/htdocs/w00...') #2 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/Resources/config/validator.php(114): Symfony\Component\DependencyInjection\Loader\Configurator\PrototypeConfigurator->__destruct() #3 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/PhpFileLoader.php(148): Symfony\Component\DependencyInjection\Loader\ProtectedPhpFileLoader::Symfony\Component\DependencyInjection\Loader\Configurator\{closure}(Object(Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator)) #4 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/PhpFileLoader.php(64): Symfony\Component\DependencyInjection\Loader\PhpFileLoader->executeCallback(Object(Closure), Object(Symfony\Component\DependencyInjection\Loader\Configurator\ContainerConfigurator), '/www/htdocs/w00...') #5 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(1623): Symfony\Component\DependencyInjection\Loader\PhpFileLoader->load('validator.php') #6 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/framework-bundle/DependencyInjection/FrameworkExtension.php(487): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->registerValidationConfiguration(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder), Object(Symfony\Component\DependencyInjection\Loader\PhpFileLoader), true) #7 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Compiler/MergeExtensionConfigurationPass.php(81): Symfony\Bundle\FrameworkBundle\DependencyInjection\FrameworkExtension->load(Array, Object(Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationContainerBuilder)) #8 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/DependencyInjection/MergeExtensionConfigurationPass.php(40): Symfony\Component\DependencyInjection\Compiler\MergeExtensionConfigurationPass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #9 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Compiler/Compiler.php(73): Symfony\Component\HttpKernel\DependencyInjection\MergeExtensionConfigurationPass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #10 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/ContainerBuilder.php(752): Symfony\Component\DependencyInjection\Compiler\Compiler->compile(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #11 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(495): Symfony\Component\DependencyInjection\ContainerBuilder->compile() #12 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(740): Symfony\Component\HttpKernel\Kernel->initializeContainer() #13 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/http-kernel/Kernel.php(170): Symfony\Component\HttpKernel\Kernel->preBoot() #14 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/runtime/Runner/Symfony/HttpKernelRunner.php(35): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #15 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/autoload_runtime.php(29): Symfony\Component\Runtime\Runner\Symfony\HttpKernelRunner->run() #16 /www/htdocs/w00a74ec/ett.ffw-soehlde.de/public/index.php(9): require_once('/www/htdocs/w00...') #17 {main} thrown in /www/htdocs/w00a74ec/ett.ffw-soehlde.de/symfony/vendor/symfony/dependency-injection/Loader/FileLoader.php on line 338