Notice: Undefined index: HTTP_REFERER in _get_server_var() (line 256 of modules/drupal-server_tokens/server_tokens.tokens.inc). _get_server_var('HTTP_REFERER') (Line: 232)
server_tokens_tokens('server', Array, Array, Array, Object)
call_user_func_array('server_tokens_tokens', Array) (Line: 403)
Drupal\Core\Extension\ModuleHandler->invokeAll('tokens', Array) (Line: 304)
Drupal\Core\Utility\Token->generate('server', Array, Array, Array, Object) (Line: 196)
Drupal\Core\Utility\Token->replace('[server:referrer]', Array, Array, Object) (Line: 151)
Drupal\webform\WebformTokenManager->replace('[server:referrer]', Object, Array, Array, Object) (Line: 115)
Drupal\webform\WebformTokenManager->replace(Array, Object, Array, Array, Object) (Line: 424)
Drupal\webform\WebformSubmissionForm->setEntity(Object) (Line: 45)
Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'add') (Line: 1243)
Drupal\webform\Entity\Webform->getSubmissionForm() (Line: 76)
Drupal\webform\Controller\WebformEntityController->addForm(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 158)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 80)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
Drupal\Core\DrupalKernel->handle(Object) (Line: 23)
Notice: Undefined index: HTTP_REFERER in _get_server_var() (line 256 of modules/drupal-server_tokens/server_tokens.tokens.inc). _get_server_var('HTTP_REFERER') (Line: 232)
server_tokens_tokens('server', Array, Array, Array, Object)
call_user_func_array('server_tokens_tokens', Array) (Line: 403)
Drupal\Core\Extension\ModuleHandler->invokeAll('tokens', Array) (Line: 304)
Drupal\Core\Utility\Token->generate('server', Array, Array, Array, Object) (Line: 196)
Drupal\Core\Utility\Token->replace('[server:referrer]', Array, Array, Object) (Line: 151)
Drupal\webform\WebformTokenManager->replace('[server:referrer]', Object, Array, Array, Object) (Line: 115)
Drupal\webform\WebformTokenManager->replace(Array, Object, Array, Array, Object) (Line: 424)
Drupal\webform\WebformSubmissionForm->setEntity(Object) (Line: 45)
Drupal\Core\Entity\EntityFormBuilder->getForm(Object, 'add') (Line: 1243)
Drupal\webform\Entity\Webform->getSubmissionForm() (Line: 76)
Drupal\webform\Controller\WebformEntityController->addForm(Object, Object)
call_user_func_array(Array, Array) (Line: 123)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 564)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 124)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->wrapControllerExecutionInRenderContext(Array, Array) (Line: 97)
Drupal\Core\EventSubscriber\EarlyRenderingControllerWrapperSubscriber->Drupal\Core\EventSubscriber\{closure}() (Line: 158)
Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 80)
Symfony\Component\HttpKernel\HttpKernel->handle(Object, 1, 1) (Line: 58)
Drupal\Core\StackMiddleware\Session->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\KernelPreHandle->handle(Object, 1, 1) (Line: 191)
Drupal\page_cache\StackMiddleware\PageCache->fetch(Object, 1, 1) (Line: 128)
Drupal\page_cache\StackMiddleware\PageCache->lookup(Object, 1, 1) (Line: 82)
Drupal\page_cache\StackMiddleware\PageCache->handle(Object, 1, 1) (Line: 48)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle(Object, 1, 1) (Line: 51)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle(Object, 1, 1) (Line: 23)
Stack\StackedHttpKernel->handle(Object, 1, 1) (Line: 708)
Drupal\Core\DrupalKernel->handle(Object) (Line: 23)