I say they are not working but they are simply linked incorrectly when placed on live platform.
Example of current:
<link rel=“stylesheet” type=“text/css” href="…/_lib/libraries/grp/prj-shell /assets/css/elegant-icons.css">
Should be:
<link rel=“stylesheet” type=“text/css” href="…/libraries/grp/prj-shell /assets/css/elegant-icons.css">
For time being I have simply uploaded the library folder into the the lib folder!, but of course this is not corrrect!!!