Exception Type: Error com_gridbox/helpers/store.php

Hello, I am getting this exception from several sites of mine. None of which have the store app installed. Would this be a hacker looking for a vulnerability.

Exception Type: Error
File: /com_gridbox/helpers/store.php
Line: 2009
Message: Attempt to assign property "variations" on null

/com_gridbox/models/store.php(408): store->getProductData()

/com_gridbox/controllers/store.php(251): gridboxModelStore->addPostToCart()
/libraries/src/MVC/Controller/BaseController.php(693):

gridboxControllerStore->addPostToCart()
/com_gridbox/gridbox.php(22): Joomla\CMS\MVC\Controller\BaseController->execute()

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