TypeError upon placing an order #124

Preconditions (*)

1. Magento 2.4.6-p13
2. PHP 8.1.31
3. Extension version 1.6.4

Steps to reproduce (*)

1. Install the extension
2. Do not configure the extension to connect with Meta
3. Add a product to the cart
4. Go to the checkout page
5. Enter shipping address and select a shipping payment
6. Move to the billing step in the checkout
7. Place the order

Expected result (*)

1. An order will be successfully placed

Actual result (*)

1. An error occurs:
   TypeError: Meta\Conversion\Plugin\Tracker\AddGuestPaymentInfo::afterSavePaymentInformation(): Argument 2 ($result) must be of type bool, null given, called in /data/web/magento2_staging/vendor/magento/framework/Interception/Interceptor.php on line 146 and defined in /data/web/magento2_staging/vendor/meta/module-conversion/Plugin/Tracker/AddGuestPaymentInfo.php:28