Newsletter issue Decorating Easter Accoutrements: a Workshop Was Held at the University

Test
A comma-separated list of email addresses.
Send
Send newsletter issue to 59 subscribers.
Mails will be sent when cron runs.
The website encountered an unexpected error. Try again later.
Drupal\Component\Plugin\Exception\PluginException: Plugin (process_node_queue) instance class "Drupal\broken_images_checker\Plugin\QueueWorker\ProcessNodeQueue" does not exist. in Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass() (line 97 of core/lib/Drupal/Component/Plugin/Factory/DefaultFactory.php).
Drupal\Component\Plugin\Factory\DefaultFactory::getPluginClass() (Line: 17)
Drupal\Core\Plugin\Factory\ContainerFactory->createInstance() (Line: 83)
Drupal\Component\Plugin\PluginManagerBase->createInstance() (Line: 63)
Drupal\Core\Queue\QueueWorkerManager->createInstance() (Line: 208)
Drupal\Core\Cron->processQueues() (Line: 162)
Drupal\Core\Cron->run() (Line: 75)
Drupal\Core\ProxyClass\Cron->run() (Line: 65)
Drupal\automated_cron\EventSubscriber\AutomatedCron->onTerminate()
call_user_func() (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch() (Line: 115)
Symfony\Component\HttpKernel\HttpKernel->terminate() (Line: 66)
Drupal\Core\StackMiddleware\StackedHttpKernel->terminate() (Line: 715)
Drupal\Core\DrupalKernel->terminate() (Line: 22)