Comunicaciones | Encuentro en Línea CHAT

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TypeError: Argument 1 passed to Drupal\Core\Session\AccountSwitcher::switchTo() must implement interface Drupal\Core\Session\AccountInterface, null given, called in /var/www/D802/modules/simplenews/src/Mail/MailEntity.php on line 237 in Drupal\Core\Session\AccountSwitcher->switchTo() (line 58 of core/lib/Drupal/Core/Session/AccountSwitcher.php).

Drupal\Core\Session\AccountSwitcher->switchTo(NULL) (Line: 237)
Drupal\simplenews\Mail\MailEntity->setContext() (Line: 364)
Drupal\simplenews\Mail\MailEntity->getBodyWithFormat('html') (Line: 343)
Drupal\simplenews\Mail\MailEntity->getBody() (Line: 58)
Drupal\simplenews\Mail\MailBuilder->buildNewsletterMail(Array, Object) (Line: 558)
simplenews_mail('node', Array, Array) (Line: 271)
Drupal\Core\Mail\MailManager->doMail('simplenews', 'node', 'amiranda@iztacala.unam.mx', 'es', Array, '"EL CHAT" ', 1) (Line: 179)
Drupal\Core\Mail\MailManager->Drupal\Core\Mail\{closure}() (Line: 573)
Drupal\Core\Render\Renderer->executeInRenderContext(Object, Object) (Line: 180)
Drupal\Core\Mail\MailManager->mail('simplenews', 'node', 'amiranda@iztacala.unam.mx', 'es', Array, '"EL CHAT" ', 1) (Line: 70)
Drupal\mailsystem\MailsystemManager->mail('simplenews', 'node', 'amiranda@iztacala.unam.mx', 'es', Array, '"EL CHAT" ') (Line: 332)
Drupal\simplenews\Mail\Mailer->sendMail(Object) (Line: 242)
Drupal\simplenews\Mail\Mailer->sendSpool(200) (Line: 334)
simplenews_cron()
call_user_func_array('simplenews_cron', Array) (Line: 392)
Drupal\Core\Extension\ModuleHandler->invoke('simplenews', 'cron') (Line: 236)
Drupal\Core\Cron->invokeCronHandlers() (Line: 134)
Drupal\Core\Cron->run() (Line: 75)
Drupal\Core\ProxyClass\Cron->run() (Line: 65)
Drupal\automated_cron\EventSubscriber\AutomatedCron->onTerminate(Object, 'kernel.terminate', Object)
call_user_func(Array, Object, 'kernel.terminate', Object) (Line: 111)
Drupal\Component\EventDispatcher\ContainerAwareEventDispatcher->dispatch('kernel.terminate', Object) (Line: 88)
Symfony\Component\HttpKernel\HttpKernel->terminate(Object, Object) (Line: 32)
Stack\StackedHttpKernel->terminate(Object, Object) (Line: 686)
Drupal\Core\DrupalKernel->terminate(Object, Object) (Line: 22)