From f9c7203a48637c947a31da0f702e2f6281af524a Mon Sep 17 00:00:00 2001
From: Alex-Welsh <alex@stackhpc.com>
Date: Fri, 4 Apr 2025 11:13:35 +0100
Subject: [PATCH] Fix error with long messages breaking for everyone

---
 web-apps/chat/app.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/web-apps/chat/app.py b/web-apps/chat/app.py
index b2ebaa0..18284bb 100644
--- a/web-apps/chat/app.py
+++ b/web-apps/chat/app.py
@@ -70,7 +70,7 @@ def inference(latest_message, history):
         context = []
         if INCLUDE_SYSTEM_PROMPT:
             context.append(SystemMessage(content=settings.model_instruction))
-        else:
+        elif history and len(history) > 0:
             # Mimic system prompt by prepending it to first human message
             history[0]['content'] = f"{settings.model_instruction}\n\n{history[0]['content']}"