f - add log on PathParameterError

Author: alecchendev

lightning/src/ln/outbound_payment.rs

@@ -764,6 +764,7 @@ impl OutboundPayments {
 				// initial HTLC-Add messages yet.
 			},
 			PaymentSendFailure::PathParameterError(results) => {
+				log_error!(logger, "Failed to send to route due to parameter error in a single path. Your router is buggy");
 				Self::push_path_failed_evs_and_scids(payment_id, payment_hash, &mut route_params, route.paths, results.into_iter(), pending_events);
 				self.abandon_payment(payment_id, PaymentFailureReason::UnexpectedError, pending_events);
 			},