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

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.

    var newLayer = new ol.layer.Tile({
    source: new ol.source.OSM({
        url: 'E:/Maperitive/Tiles/vychod/{z}/{x}/{y}.png'
    })
});
var schladming = [21.6187, 48.7327]; // longitude first, then latitude
// since we are using OSM, we have to transform the coordinates...
var schladmingWebMercator = ol.proj.fromLonLat(schladming);

var map = new ol.Map({
    layers: [
        newLayer
    ],
    controls: [],
    target: 'mapid',
    view: new ol.View({
        center: schladmingWebMercator,
        zoom: 10,
        minZoom: 10,
        maxZoom: 14
    })
});

error message from console:

Access to Image at file:///E:/Maperitive/Tiles/vychod/10/573/352.png from origin null has been blocked by CORS policy: Invalid response. Origin null is therefore not allowed access.

When I double-click on image URL, image is opened. Any ideas what is wrong? I never had that error before.

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