Update app.py

app.py

@@ -699,7 +699,25 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
                 value=get_system_status()
             )
             
-            train_btn.click(
+            # Event handlers
+    send_btn.click(
+        chat_interface,
+        inputs=[msg_input, chatbot],
+        outputs=[chatbot, msg_input]
+    )
+    
+    msg_input.submit(
+        chat_interface,
+        inputs=[msg_input, chatbot],
+        outputs=[chatbot, msg_input]
+    )
+    
+    clear_btn.click(
+        lambda: ([], ""),
+        outputs=[chatbot, msg_input]
+    )
+    
+    train_btn.click(
         train_qa_system,
         outputs=[status_display]
     )