try without queue

app.py

@@ -397,4 +397,4 @@ with gr.Blocks(delete_cache=(86400, 86400)) as demo:
         import_button.upload(import_history, inputs=[chatbot, import_button], outputs=[chatbot, system_prompt])
 
 demo.unload(lambda: [os.remove(file) for file in temp_files])
-demo.queue().launch()
+demo.launch()