From 1e4988780e450a47af151dd18417ff4bece5594e Mon Sep 17 00:00:00 2001
From: Robin Salen <salenrobin@gmail.com>
Date: Tue, 12 Mar 2024 18:36:20 +0900
Subject: [PATCH] Fix previous hashes fetching

---
 leader/src/lib.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/leader/src/lib.rs b/leader/src/lib.rs
index 00919a3..cffb0e9 100644
--- a/leader/src/lib.rs
+++ b/leader/src/lib.rs
@@ -125,6 +125,9 @@ pub async fn get_block_hashes(block_number: U64, provider: &Provider<Http>) -> R
         .hash
         .unwrap();
     for i in 1..=256 {
+        if block_number < i.into() {
+            break;
+        }
         let hash = provider
             .get_block(block_number - i)
             .await?