From 8fb17ba3f817bd46fcbe46107d43e714ee0df7ef Mon Sep 17 00:00:00 2001
From: heimoshuiyu <heimoshuiyu@gmail.com>
Date: Sat, 8 Jul 2023 14:16:51 +0800
Subject: [PATCH] fix bug on completion with empty history

---
 src/chatbox.tsx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/chatbox.tsx b/src/chatbox.tsx
index 746139f..a87c58e 100644
--- a/src/chatbox.tsx
+++ b/src/chatbox.tsx
@@ -169,8 +169,10 @@ export default function ChatBOX(props: {
     if (data.usage.prompt_tokens) {
       const userMessageToken = data.usage.prompt_tokens - aboveToken;
       console.log("set user message token");
-      chatStore.history.filter((msg) => !msg.hide).slice(-1)[0].token =
-        userMessageToken;
+      if (chatStore.history.filter((msg) => !msg.hide).length > 0) {
+        chatStore.history.filter((msg) => !msg.hide).slice(-1)[0].token =
+          userMessageToken;
+      }
     }
 
     chatStore.history.push({