fetch database when submit button

app.py

@@ -530,6 +530,8 @@ with gr.Blocks() as demo:
                         inputs=[username_input, groupname_input, file_input], 
                         outputs=[status_output, leaderboard_display])
 
+    submit_button.click(fn=fetch_lib, inputs=[], outputs=[])
+
     status_output.change(fn=get_error_message, inputs=[], outputs=status_output)
 
 demo.launch()