The following request over Boulder, CO:

https://services.sentinel-hub.com/ogc/fis/{INSTANCEID}?LAYER=CLOUD-STATISTICS-FIS&TIME=2020-09-23/2020-10-23/P1D&BBOX=-11714289.443427093,4872553.548459551,-11718506.244403891,4869035.599330028&RESOLUTION=200&MAXCC=100&crs=EPSG:3857

fails with the error:

java.util.concurrent.ExecutionException: com.sinergise.sentinel.java.io.manager.MissingFileException: Illegal request to https://sentinel-s2-l1c-index.s3.amazonaws.com/tiles/13/T/DE/2020/9/23/0/B04.index. HTTP Status: 403

It shouldn’t matter because everything else works but the CLOUD-STATSTICS-FIS layer is one I grabbed off the shelf and has the following script:

function index(x, y) {

	return (x - y) / (x + y);

}



function clip(a) {

  return Math.max(0, Math.min(1, a));

}



let bRatio = (B03 - 0.175) / (0.39 - 0.175);

let NGDR = index(B03, B04);



if (B11>0.1 && bRatio > 1) return n1];

if (B11 > 0.1 && bRatio > 0 && NGDR>0) return n1];

return n0];