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Error: Call to a member function toUrl() on null in rdf_comment_storage_load() (line 245 of core/modules/rdf/rdf.module).
rdf_comment_storage_load() (Line: 818)
Drupal\Core\Entity\ContentEntityStorageBase->invokeStorageLoadHook() (Line: 416)
Drupal\Core\Entity\Sql\SqlContentEntityStorage->doLoadMultiple() (Line: 300)
Drupal\Core\Entity\EntityStorageBase->loadMultiple() (Line: 188)
Drupal\Core\Entity\EntityRepository->getCanonicalMultiple() (Line: 180)
Drupal\Core\Entity\EntityRepository->getCanonical() (Line: 149)
Drupal\Core\ParamConverter\EntityConverter->convert() (Line: 100)
Drupal\Core\ParamConverter\ParamConverterManager->convert() (Line: 45)
Drupal\Core\Routing\Enhancer\ParamConversionEnhancer->enhance() (Line: 260)
Drupal\Core\Routing\Router->applyRouteEnhancers() (Line: 131)
Drupal\Core\Routing\Router->matchRequest() (Line: 92)
Drupal\Core\Routing\AccessAwareRouter->matchRequest() (Line: 113)
Symfony\Component\HttpKernel\EventListener\RouterListener->onKernelRequest()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 127)
Symfony\Component\HttpKernel\HttpKernel->handleRaw() (Line: 68)
Symfony\Component\HttpKernel\HttpKernel->handle() (Line: 57)
Drupal\Core\StackMiddleware\Session->handle() (Line: 47)
Drupal\Core\StackMiddleware\KernelPreHandle->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: 50)
Drupal\ban\BanMiddleware->handle() (Line: 47)
Drupal\Core\StackMiddleware\ReverseProxyMiddleware->handle() (Line: 52)
Drupal\Core\StackMiddleware\NegotiationMiddleware->handle() (Line: 23)
Stack\StackedHttpKernel->handle() (Line: 708)
Drupal\Core\DrupalKernel->handle() (Line: 19)