From e8986e5fdc230841051e9809fb4aff929cef5f0e Mon Sep 17 00:00:00 2001
From: Antoni Spaanderman <56turtle56@gmail.com>
Date: Thu, 20 Jan 2022 19:24:30 +0100
Subject: [PATCH] stop for loop after genesis block

prevHash == undefined for the genesis block
---
 backend/src/routes.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/backend/src/routes.ts b/backend/src/routes.ts
index 1d98c9f4e..b642f6c28 100644
--- a/backend/src/routes.ts
+++ b/backend/src/routes.ts
@@ -567,7 +567,7 @@ class Routes {
       }
 
       let nextHash = startFromHash;
-      for (let i = 0; i < 10; i++) {
+      for (let i = 0; i < 10 && nextHash; i++) {
         const localBlock = blocks.getBlocks().find((b) => b.id === nextHash);
         if (localBlock) {
           returnBlocks.push(localBlock);