Update app.py

app.py

@@ -184,7 +184,7 @@ header {
         send_button = gr.Button("Send")
 
     with gr.Row():
-        chatbot_output = gr.Chatbot(label="Chat History", elem_classes=["chat-container"])
+        chatbot_output = gr.Chatbot(label="Chat History", type="messages")
 
     def handle_chat(user_input, sub_category, history):
         if not user_input.strip():
@@ -194,7 +194,7 @@ header {
 
     send_button.click(
         handle_chat,
-        inputs=[user_input, category_dropdown, chatbot_output],
+        inputs=[user_input, sub_category, chatbot_output],
         outputs=[chatbot_output, chatbot_output]
     )