Uncaught error breaks API

I was troubleshooting another plugin that couldn’t connect to the API and found this in the my error logs: Uncaught Error: Call to a member function get_cart() on null in /plugins/dynamic-pricing-and-discounts-for-woocommerce-basic-version/public/new_calculation_handler.php:79

when I deactivated your plugin things started working again. Wondering if you have a fix or an update for this?