created a function for creating a gradio app

app.py

@@ -174,4 +174,7 @@ with gr.Blocks(css=css) as demo:
     )
     #clear.click(lambda: None, None, chatbot, queue=False)
 
-demo.queue().launch()
+demo.queue().launch()
+
+def create_gradio_interface(qa:RetrievalQAWithSourcesChain, ):
+    pass