Error with Cartflow

Hi
I use Cartflow and when I set up a template and decide to edit it with elementor, the template got messy and at the top of the WP dashboard here is the message that showed up:
Warning: Invalid argument supplied for foreach() in /home3/ieltsnob/public_html/wp-content/plugins/cartflows/classes/fields/typography/class-cartflows-font-families.php on line 147