Fatal error: Uncaught Symfony\Component\DependencyInjection\Exception\RuntimeException: Cannot autowire service "App\Form\Seminar\SeminarDatenType": argument "$security" of method "__construct()" has type "Symfony\Bundle\SecurityBundle\Security" but this class was not found. in /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php:54 Stack trace: #0 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/AbstractRecursivePass.php(82): Symfony\Component\DependencyInjection\Compiler\DefinitionErrorExceptionPass->processValue(Object(Symfony\Component\DependencyInjection\Definition), true) #1 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php(32): Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass->processValue(Array, true) #2 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/AbstractRecursivePass.php(47): Symfony\Component\DependencyInjection\Compiler\DefinitionErrorExceptionPass->processValue(Array, true) #3 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/Compiler.php(91): Symfony\Component\DependencyInjection\Compiler\AbstractRecursivePass->process(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #4 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/ContainerBuilder.php(744): Symfony\Component\DependencyInjection\Compiler\Compiler->compile(Object(Symfony\Component\DependencyInjection\ContainerBuilder)) #5 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/http-kernel/Kernel.php(545): Symfony\Component\DependencyInjection\ContainerBuilder->compile() #6 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/http-kernel/Kernel.php(786): Symfony\Component\HttpKernel\Kernel->initializeContainer() #7 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/http-kernel/Kernel.php(187): Symfony\Component\HttpKernel\Kernel->preBoot() #8 /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/public/index.php(30): Symfony\Component\HttpKernel\Kernel->handle(Object(Symfony\Component\HttpFoundation\Request)) #9 {main} thrown in /pages/5d/09/d0009095/home/htdocs/seminarboerse.de/vendor/symfony/dependency-injection/Compiler/DefinitionErrorExceptionPass.php on line 54