Update app.py

app.py

@@ -4,7 +4,7 @@ from my_memory_logic import run_with_session_memory
 def chat_interface_fn(message, history):
     """
     Multi-turn chat function for Gradio's ChatInterface.
-    Returns response and history in the format expected by Gradio.
+    Returns strings for both message and history to match Gradio's expected format.
     """
     # Initialize history if None
     history = history or []
@@ -16,9 +16,8 @@ def chat_interface_fn(message, history):
         print(f"Error in run_with_session_memory: {str(e)}")
         answer = "I apologize, but I encountered an error processing your request."
     
-    # Return the answer and append to history
-    history.append((message, answer))
-    return history
+    # Return strings directly - this is what Gradio's ChatInterface expects
+    return str(answer)
 
 # Custom CSS for chat interface
 my_chat_css = """