Error code on orders page

We are seeing this error message on our orders screen, which takes up a lot of space and makes it hard to scroll orders.

Warning: Invalid argument supplied for foreach() in /srv/users/drwilson/apps/drwilsons/public/wp-content/plugins/woo-advanced-shipment-tracking/includes/class-wc-advanced-shipment-tracking-admin.php on line 1801