Fix Call to undefined method WCS_Staging::is_duplicate_site()
Fatal error: Uncaught Error: Call to undefined method WCS_Staging::is_duplicate_site() in /wp-content/plugins/woocommerce-payments/includes/subscriptions/class-wc-payments-subscriptions.php:132 The error message you’re seeing indicates that there is an undefined method called is_duplicate_site() being called in the file class-wc-payments-subscriptions.php at line 132. This error is typically caused by a compatibility issue between different plugins or a problem with the WooCommerce Payments plugin itself….