fix caching

app.py

@@ -171,6 +171,7 @@ with gr.Blocks() as demo:
                 [Papers With Code](https://paperswithcode.com/paper/a-synthetic-dataset-for-personal-attribute)<br/>
                 </p></span>
                 """)
+        demo.unload(lambda: print("hello"))
     def hello_world():
         gr.Info("Hi! This space was created by authors of the dataset SynthPAI. Click the button 'Submit' to start.")
         return "hello world"