Update app.py

app.py

@@ -101,6 +101,8 @@ question_prompt = (
     "Unless retrievable from the documents, don't ask questions which cannot be compared to previous periods."
 )
 
+import asyncio
+
 async def send_heartbeat(interval=300):
     while True:
         await asyncio.sleep(interval)  # Send heartbeat every 5 minutes
@@ -123,7 +125,11 @@ async def on_chat_start():
         # Cancel the heartbeat once the user provides input
         heartbeat_task.cancel()
 
-        # Handle the ticker response
+        # Check if ticker_response is None or doesn't contain 'content'
+        if ticker_response is None or 'content' not in ticker_response:
+            await cl.Message(content="No input received. Please restart and enter a valid ticker symbol.").send()
+            return
+
         ticker_symbol = ticker_response['content'].strip().upper()
         if not ticker_symbol:
             await cl.Message(content="No valid ticker symbol provided. Please restart and enter a valid ticker symbol.").send()