Access to Image from origin 'null' has been blocked by CORS policy

Question

I have JavaScript application in OpenLayers 3, and my base layer is created from local tiles. I work only in my computer so I do not know why I have CORS error.

Answer 1

The problem was actually solved by providing crossOrigin: null to OpenLayers OSM source:

var newLayer = new ol.layer.Tile({
source: new ol.source.OSM({
    url: 'E:/Maperitive/Tiles/vychod/{z}/{x}/{y}.png',
    crossOrigin: null
    })
});