Firecheckout & MultiSafepay payment method

The cart page returns empty if the customers cancel payment via a browser back button.

1. To solve this problem navigate to the payment module core file: MultiSafepay->magento2-frontend->etc->frontend->events.xml and update code with the code below:

        <?xml version="1.0"?>
        <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
            <event name="controller_action_predispatch_checkout_index_index">
                <observer name="multisafepay_action_predispatch_checkout_index_index" instance="MultiSafepay\ConnectFrontend\Observer\RestoreQuoteObserver" />
            </event>
            <!-- Add this additional event on redirect to cart page -->
            <event name="controller_action_predispatch_checkout_cart_index">
                <observer name="multisafepay_action_predispatch_checkout_cart_index" instance="MultiSafepay\ConnectFrontend\Observer\RestoreQuoteObserver" />
            </event>
        </config>
   
   

2. Save changes and clean magento cache.