see if this works

app.py

@@ -1,16 +1,20 @@
 import gradio as gr
 from huggingface_hub import WebhooksServer, WebhookPayload
 
-from model import model
+# from model import model
 
 webhook_payload = None
 
 with gr.Blocks() as ui:
-    gr.Markdown(f"## Hugging Face Webhooks Demo\n\n{webhook_payload.json() if webhook_payload is not None else ''}")
+    p = gr.State(None)
+    def update_payload():
+        return webhook_payload.json() if webhook_payload is not None else ''
+    gr.Markdown(f"## Hugging Face Webhooks Demo\n\n{p}")
     progress = gr.Progress(track_tqdm=True)
+    ui.load(update_payload, outputs=[p])
 
 # 2. Create WebhooksServer with custom UI and secret
-app = WebhooksServer(ui=ui, webhook_secret="test")
+app = WebhooksServer(ui=ui.load(), webhook_secret="test")
 
 @app.add_webhook
 async def train(payload: WebhookPayload):