PHP error: Uncaught TypeError

Just got this error on a website that I manage:

Error: Uncaught TypeError: Unsupported operand types: string * string in /wp-content/plugins/bold-page-builder/content_elements/bt_bb_latest_posts/bt_bb_latest_posts.php:65

I managed to fix it by changing line 65 in the file bold-page-builder/content_elements/bt_bb_latest_posts/bt_bb_latest_posts.php to this, maybe you could add this change on the next update of the plugin?

Old:
$number = $rows * $columns;

New:
$number = (int)$rows * (int)$columns;