Load a kml file in locale (linux)

Hy guys, I'm trying to load a KML file in path : "/var/www/laravel/public/kml/doc.kml" , but i can't. The code of import is:

var ctaLayer = new google.maps.KmlLayer({
      url: '/var/www/laravel/public/kml/doc.kml',
      map: map
    });

What I missed?

via Chebli Mohamed