Mensaje de error

• Warning: Undefined array key 0 in Drupal\ev_project_revision\Service\ProjectRevisionService->checkLastRevision() (line 27 of modules/custom/ev_project_revision/src/Service/ProjectRevisionService.php).

  Drupal\ev_project_revision\Service\ProjectRevisionService->checkLastRevision('26492') (Line: 32)
  Drupal\ev_project_revision\EventSubscriber\NodeRevisionSubscriber->onKernelRequest(Object, 'kernel.request', Object)
  call_user_func(Array, Object, 'kernel.request', Object) (Line: 142)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.request') (Line: 145)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
  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: 50)
  Drupal\ban\BanMiddleware->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: 709)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)
  

• Warning: array_flip(): Can only flip string and integer values, entry skipped in Drupal\Core\Entity\ContentEntityStorageBase->loadMultipleRevisions() (line 670 of core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php).

  Drupal\Core\Entity\ContentEntityStorageBase->loadMultipleRevisions(Array) (Line: 637)
  Drupal\Core\Entity\ContentEntityStorageBase->loadRevision(NULL) (Line: 33)
  Drupal\ev_project_revision\EventSubscriber\NodeRevisionSubscriber->onKernelRequest(Object, 'kernel.request', Object)
  call_user_func(Array, Object, 'kernel.request', Object) (Line: 142)
  Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch(Object, 'kernel.request') (Line: 145)
  Symfony\Component\HttpKernel\HttpKernel->handleRaw(Object, 1) (Line: 81)
  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: 50)
  Drupal\ban\BanMiddleware->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: 709)
  Drupal\Core\DrupalKernel->handle(Object) (Line: 19)