Error message
- Warning: array_flip(): Can only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 312 of core\lib\Drupal\Core\Entity\EntityStorageBase.php).
- Warning: array_flip(): Can only flip STRING and INTEGER values! in Drupal\Core\Entity\EntityStorageBase->loadMultiple() (line 312 of core\lib\Drupal\Core\Entity\EntityStorageBase.php).