Error message
Deprecated function: Drupal\captcha\Service\CaptchaService::insertCaptchaElement(): Implicitly marking parameter $placement as nullable is deprecated, the explicit nullable type must be used instead in include() (line 576 of vendor/composer/ClassLoader.php).
include() (Line: 576) {closure:Composer\Autoload\ClassLoader::initializeIncludeClosure():575}() (Line: 427) Composer\Autoload\ClassLoader->loadClass() (Line: 261) Drupal\Component\DependencyInjection\Container->createService() (Line: 179) Drupal\Component\DependencyInjection\Container->get() (Line: 197) Drupal::service() (Line: 133) captcha_form_alter() (Line: 552) Drupal\Core\Extension\ModuleHandler->alter() (Line: 834) Drupal\Core\Form\FormBuilder->prepareForm() (Line: 285) Drupal\Core\Form\FormBuilder->buildForm() (Line: 48) Drupal\Core\Entity\EntityFormBuilder->getForm() (Line: 80) Drupal\contact\Controller\ContactController->contactSitePage() call_user_func_array() (Line: 123) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::wrapControllerExecutionInRenderContext():121}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::onController():96}() (Line: 181) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 191) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)Deprecated function: Drupal\captcha\Service\CaptchaService::insertCaptchaElement(): Implicitly marking parameter $captcha_element as nullable is deprecated, the explicit nullable type must be used instead in include() (line 576 of vendor/composer/ClassLoader.php).
include() (Line: 576) {closure:Composer\Autoload\ClassLoader::initializeIncludeClosure():575}() (Line: 427) Composer\Autoload\ClassLoader->loadClass() (Line: 261) Drupal\Component\DependencyInjection\Container->createService() (Line: 179) Drupal\Component\DependencyInjection\Container->get() (Line: 197) Drupal::service() (Line: 133) captcha_form_alter() (Line: 552) Drupal\Core\Extension\ModuleHandler->alter() (Line: 834) Drupal\Core\Form\FormBuilder->prepareForm() (Line: 285) Drupal\Core\Form\FormBuilder->buildForm() (Line: 48) Drupal\Core\Entity\EntityFormBuilder->getForm() (Line: 80) Drupal\contact\Controller\ContactController->contactSitePage() call_user_func_array() (Line: 123) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::wrapControllerExecutionInRenderContext():121}() (Line: 638) Drupal\Core\Render\Renderer->executeInRenderContext() (Line: 121) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext() (Line: 97) Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->{closure:Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber::onController():96}() (Line: 181) Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 76) Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 53) Drupal\Core\StackMiddleware\Session->handle() (Line: 48) Drupal\Core\StackMiddleware\KernelPreHandle->handle() (Line: 28) Drupal\Core\StackMiddleware\ContentLength->handle() (Line: 32) Drupal\big_pipe\StackMiddleware\ContentLength->handle() (Line: 191) Drupal\page_cache\StackMiddleware\PageCache->fetch() (Line: 128) Drupal\page_cache\StackMiddleware\PageCache->lookup() (Line: 82) Drupal\page_cache\StackMiddleware\PageCache->handle() (Line: 48) Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 51) Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 36) Drupal\Core\StackMiddleware\AjaxPageState->handle() (Line: 51) Drupal\Core\StackMiddleware\StackedHttpKernel->handle() (Line: 741) Drupal\Core\DrupalKernel->handle() (Line: 19)