Site is Experiencing a Technical Issue

Hi there,

Our website has been updated to the latest WP version and we are facing a technical issue.

This is what we got in the email:

When seeking help with this issue, you may be asked for some of the following information:
WordPress version 6.1
Active theme: Avada Child (version 1.0.0)
Current plugin: WooCommerce Amazon Pay (version 2.3.0)
PHP version 7.4.32

Error Details
=============
An error of type E_ERROR was caused in line 11 of the file /var/www/vhosts/websitedomain.com/httpdocs/wp-content/plugins/woocommerce-gateway-amazon-payments-advanced/includes/class-wc-gateway-amazon-payments-advanced-express.php. Error message: Uncaught Error: Class ‘WC_Gateway_Amazon_Payments_Advanced’ not found in /var/www/vhosts/websitedomain.com/httpdocs/wp-content/plugins/woocommerce-gateway-amazon-payments-advanced/includes/class-wc-gateway-amazon-payments-advanced-express.php:11
Stack trace:
#0 /var/www/vhosts/websitedomain.com/httpdocs/wp-content/plugins/woocommerce-gateway-amazon-payments-advanced/woocommerce-gateway-amazon-payments-advanced.php(269): require_once()
#1 /var/www/vhosts/websitedomain.com/httpdocs/wp-includes/class-wp-hook.php(308): WC_Amazon_Payments_Advanced->add_gateway()
#2 /var/www/vhosts/websitedomain.com/httpdocs/wp-includes/plugin.php(205): WP_Hook->apply_filters()
#3 /var/www/vhosts/websitedomain.com/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-payment-gateways.php(88): apply_filters()
#4 /var/www/vhosts/websitedomain.com/httpdocs/wp-content/plugins/woocommerce/includes/class-wc-payment-gateways.php(70): WC_Payment_Gateways->init()

Best