Error: Class 'Swift_Message' not found in Drupal\swiftmailer\Plugin\Mail\SwiftMailer->mail() (line 174 of modules/swiftmailer/src/Plugin/Mail/SwiftMailer.php). Drupal\swiftmailer\Plugin\Mail\SwiftMailer->mail(Array) (Line: 50)
Drupal\mailsystem\Adapter->mail(Array) (Line: 307)
Drupal\Core\Mail\MailManager->doMail('update', 'status_notify', 'example@gmail.com', 'en', Array, NULL, 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('update', 'status_notify', 'example@gmail.com', 'en', Array, NULL, 1) (Line: 73)
Drupal\mailsystem\MailsystemManager->mail('update', 'status_notify', 'example@gmail.com', 'en', Array) (Line: 43)
_update_cron_notify() (Line: 284)
update_cron()
call_user_func_array('update_cron', Array) (Line: 392)
Drupal\Core\Extension\ModuleHandler->invoke('update', '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)