KML layer not loading

I'm trying to load a simple KML layer on a Google Map. I cannot make it work for a specific layer, while, at the same time, other similar KML layers load fine. Here is the minimal version of the code: https://jsfiddle.net/eundas/0fhqmocv/4/ Why does this not work? Is it something with my code or with the structure of the KML? I would appreciated any light on this.

var map;
var options = {
  zoom: 5,
  center: new google.maps.LatLng(-33.5, -70),
  mapTypeId: google.maps.MapTypeId.ROADMAP,
  scaleControl: true
};
map = new google.maps.Map(document.getElementById("mapcanvas"), options);

var Coquimbo4204Layer = new google.maps.KmlLayer({
    url: 'https://drive.google.com/uc?export=download&id=1bCBH784phTY_wK0WZiAbbDRlXb1dJsv7'
});
google.maps.event.addListener(Coquimbo4204Layer, 'status_changed', function() {
console.log(Coquimbo4204Layer.getStatus());
})
Coquimbo4204Layer.setMap(map);

Solution

With the posted code, I get FETCH_ERROR, which according to the documentation means: The document could not be fetched.

It works if the url is http: rather than https: (that seems to be an issue with Google Drive).

Related questions:

proof of concept fiddle

code snippet:

var map;
var options = {
  zoom: 5,
  center: new google.maps.LatLng(-33.5, -70),
  mapTypeId: google.maps.MapTypeId.ROADMAP,
  scaleControl: true
};
map = new google.maps.Map(document.getElementById("mapcanvas"), options);

var Coquimbo4204Layer = new google.maps.KmlLayer({
    // url: 'https://drive.google.com/uc?export=download&id=1bCBH784phTY_wK0WZiAbbDRlXb1dJsv7'
    url: 'http://drive.google.com/uc?export=download&id=1bCBH784phTY_wK0WZiAbbDRlXb1dJsv7'
});
google.maps.event.addListener(Coquimbo4204Layer, 'status_changed', function() {
console.log(Coquimbo4204Layer.getStatus());
})
Coquimbo4204Layer.setMap(map);

#mapcanvas {
  height: 500px;
  width: 500px;
  background: blue;
  margin: 0px;
  padding: 0px;
}

<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk"></script>
<div id="mapcanvas">CANVAS</div>