From 2cc0cf5e920abc74fd397199a22db0f324f8fb2e Mon Sep 17 00:00:00 2001
From: igor-aptos <110557261+igor-aptos@users.noreply.github.com>
Date: Mon, 26 Sep 2022 21:52:42 -0700
Subject: [PATCH] [txn-emitter] Fix underflow when first request fails (#4567)

This debugging log was added to show txns around the failure, but when it is the first request, there is no previous transaction.
---
 crates/transaction-emitter-lib/src/emitter/submission_worker.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/transaction-emitter-lib/src/emitter/submission_worker.rs b/crates/transaction-emitter-lib/src/emitter/submission_worker.rs
index ee66a1464f6ed..b2ed97c8c5e5c 100644
--- a/crates/transaction-emitter-lib/src/emitter/submission_worker.rs
+++ b/crates/transaction-emitter-lib/src/emitter/submission_worker.rs
@@ -332,7 +332,7 @@ pub async fn submit_transactions(
                             client
                                 .get_account_transactions_bcs(
                                     sender,
-                                    Some(account.into_inner().sequence_number() - 1),
+                                    Some(account.into_inner().sequence_number().saturating_sub(1)),
                                     Some(5),
                                 )
                                 .await