Fatal error related to subscriptions ?

Error Details
=============
An error of type E_ERROR was caused in line 185 of the file /var/www/html/wp-content/plugins/invoice-gateway-for-woocommerce/Models/Orders/IGFW_Order_CPT.php. Error message: Uncaught ArgumentCountError: Too few arguments to function IGFW\Models\Orders\IGFW_Order_CPT::save_invoice_number(), 1 passed in /var/www/html/wp-includes/class-wp-hook.php on line 308 and exactly 2 expected in /var/www/html/wp-content/plugins/invoice-gateway-for-woocommerce/Models/Orders/IGFW_Order_CPT.php:185
Stack trace:
#0 /var/www/html/wp-includes/class-wp-hook.php(308): IGFW\Models\Orders\IGFW_Order_CPT->save_invoice_number(145693)
#1 /var/www/html/wp-includes/class-wp-hook.php(332): WP_Hook->apply_filters('', Array)
#2 /var/www/html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#3 /var/www/html/wp-content/plugins/woocommerce-subscriptions/vendor/woocommerce/subscriptions-core/includes/data-stores/class-wcs-subscription-data-store-cpt.php(189): do_action('woocommerce_upd...', 145693)
#4 /var/www/html/wp-content/plugins/woocommerce/includes/class-wc-data-store.php(196): WCS_Subscription_Data_Store_CPT->update(Object(WC_Subscription))
#5 /var/www/html/wp-content/plugins/woocommerce/includes/abstr