Issue #3315497 by jcnventura, AdamPS: Mismatched entity and/or field definitions

  $entity_type->set('entity_keys', $entity_keys);

  \Drupal::entityDefinitionUpdateManager()->updateEntityType($entity_type);

}

/**

 * Fix 'uuid' entity key for subscriber.

 */

function simplenews_update_830009() {

  // The code in simplenews_update_830008() should be enough, but we have to

  // update the field storage too, see https://www.drupal.org/node/2554097.

  $manager = \Drupal::entityDefinitionUpdateManager();

  $manager->updateFieldStorageDefinition($manager->getFieldStorageDefinition('uuid', 'simplenews_subscriber'));

}