Update app.py

app.py

@@ -85,7 +85,8 @@ def process_file(file):
 
 def chatbot(message, history):
     response = handle_query(message)
-    return response
+    history.append((message, response))
+    return history, ""
 
 # Gradio interface
 with gr.Blocks() as demo:
@@ -107,9 +108,7 @@ with gr.Blocks() as demo:
             msg = gr.Textbox(label="Ask me anything about the content of the PDF:")
             clear = gr.Button("Clear")
     
-    msg.submit(chatbot, [msg, chatbot], [chatbot, msg]).then(
-        lambda: gr.update(value=""), None, [msg], queue=False
-    )
+    msg.submit(chatbot, [msg, chatbot], [chatbot, msg])
     clear.click(lambda: None, None, chatbot, queue=False)
 
 if __name__ == "__main__":