Use own tile server instead of OSM-provided one

 map.js

@@ -964,7 +964,9 @@
    
    var layers = [
        new ol.layer.Tile({
            source: new ol.source.OSM(),
            source: new ol.source.OSM({
                url: 'https://tiles.ttss.pl/{z}/{x}/{y}.png',
            }),
        }),
        route_layer,
        geolocation_layer,