Update app.py

app.py

@@ -366,10 +366,11 @@ qa_chain = RetrievalQA.from_chain_type(
     verbose = False
 )
 
- demo = gr.ChatInterface(
-     predict,
-     title = f' Open-Source LLM ({CFG.model_name}) Question Answering'
- )
+def start_demo():
+    demo = gr.ChatInterface(
+        predict,
+        title=f'Open-Source LLM ({CFG.model_name}) Question Answering'
+    )
+    demo.queue()
+    demo.launch()
 
- demo.queue()
- demo.launch()