Fix error when installing Landing Pages
Similar case: https://www.drupal.org/project/paragraphs/issues/3043708
Error: Call to a member function getFieldStorageDefinition() on null in /mnt/data/drupal/8.7.1/core/lib/Drupal/Core/Field/Entity/BaseFieldOverride.php on line 114 #0 /mnt/data/drupal/8.7.1/core/lib/Drupal/Core/Field/Plugin/Field/FieldType/EntityReferenceItem.php(470): Drupal\Core\Field\Entity\BaseFieldOverride->getFieldStorageDefinition()