Update app.py

app.py

@@ -82,6 +82,10 @@ def response(message, history, image):
         history[-1][1] = partial_response
         yield history, gr.Button(visible=False), gr.Button(visible=True, interactive=True)
 
+def hello_world():
+    gr.Warning('This is a warning message.')
+    return "hello world"
+
 with gr.Blocks(css=css) as demo:
     with gr.Column(elem_id="col-container"):
         gr.HTML(title)
@@ -101,7 +105,7 @@ with gr.Blocks(css=css) as demo:
         [submit]
     )
 
-    event = submit.click(*response_handler)
+    event = submit.click(*hello_world)
     # event.then(*postresponse_handler)
 
 demo.launch()