Handel 3 modalities input case

app.py

@@ -471,6 +471,8 @@ def bot_response(history, conversation_state):
         result = f"Error processing response: {str(e)}"
     
     # Add bot response to history
+    if result=="None":
+        result = "Current implementation does not support text + audio + image inputs in the same prompt. Please click Clear conversation button."
     history.append({"role": "assistant", "content": result})
     
     # Add to conversation state