This is the debug error message:
[16-Jun-2025 13:28:19 UTC] get_billing_first_name was called incorrectly. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), wp, WP->main, WP->parse_request, do_action_ref_array(‘parse_request’), WP_Hook->do_action, WP_Hook->apply_filters, rest_api_loaded, WP_REST_Server->serve_request, WP_REST_Server->dispatch, WP_REST_Server->respond_to_request, AutomatticWooCommerceStoreApiRoutesV1Checkout->get_response, AutomatticWooCommerceStoreApiRoutesV1AbstractRoute->get_response_by_request_method, AutomatticWooCommerceStoreApiRoutesV1Checkout->get_route_post_response, do_action(‘woocommerce_store_api_checkout_order_processed’), WP_Hook->do_action, WP_Hook->apply_filters, EVOTX_WC->create_evo_tickets_for_store_api, WC_Order->update_status, WC_Order->save, WC_Order->status_transition, do_action(‘woocommerce_order_status_completed’), WP_Hook->do_action, WP_Hook->apply_filters, EVOTX_WC->send_ticket_email, evotx_email->send_ticket_email, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong. This message was added in version 3.0.
[16-Jun-2025 13:28:19 UTC] get_billing_last_name was called incorrectly. Order properties should not be accessed directly. Backtrace: require(‘wp-blog-header.php’), wp, WP->main, WP->parse_request, do_action_ref_array(‘parse_request’), WP_Hook->do_action, WP_Hook->apply_filters, rest_api_loaded, WP_REST_Server->serve_request, WP_REST_Server->dispatch, WP_REST_Server->respond_to_request, AutomatticWooCommerceStoreApiRoutesV1Checkout->get_response, AutomatticWooCommerceStoreApiRoutesV1AbstractRoute->get_response_by_request_method, AutomatticWooCommerceStoreApiRoutesV1Checkout->get_route_post_response, do_action(‘woocommerce_store_api_checkout_order_processed’), WP_Hook->do_action, WP_Hook->apply_filters, EVOTX_WC->create_evo_tickets_for_store_api, WC_Order->update_status, WC_Order->save, WC_Order->status_transition, do_action(‘woocommerce_order_status_completed’), WP_Hook->do_action, WP_Hook->apply_filters, EVOTX_WC->send_ticket_email, evotx_email->send_ticket_email, WC_Abstract_Legacy_Order->__get, wc_doing_it_wrong. This message was added in version 3.0.