You need to start the UI elements of esx BEFORE any other scripts.
I see the [UI] folder in your screenshot I was never able to successfully get them to start from that folder.
Put them in the root of your resources folder and adjust your server.cfg to
start es_extended
start esx_menu_dialog
start esx_menu_default
start esx_menu_list
------- Any other scripts --------
start script a
start script b