Doesn't work for ECA: TypeError: Cannot assign null to property Drupal\eca\Entity\Eca::$id

Problem/Motivation

Doesn't work with the wonderful ECA module. When eca_ui and this module are enabled, by default an eca process operations links drowdown shows "Clone" from this module, but if you click it and confirm a new one won't be created and you will receive this error:

TypeError: Cannot assign null to property Drupal\eca\Entity\Eca::$id of type string in Drupal\Core\Entity\EntityBase->createDuplicate() (line 358 of /var/www/html/web/core/lib/Drupal/Core/Entity/EntityBase.php)