Countries borders retrieval not working

[aldotele]

It is likely that the external source is not available:
https://datahub.io/core/geo-countries/r/0.geojson

Points of failure:

fetch("https://datahub.io/core/geo-countries/r/0.geojson"

async function g() {
let T = [];
u.geoJsonData.features.forEach(A=>{
if (i.iso3Codes.includes(A.properties.ISO_A3)) {
const $ = ue.geoJSON(A).setStyle(l).on("click", m);
T.push($)
}
}
),
u.borderGroup = ue.layerGroup(T).addTo(u.mapInstance),
u.foundCountriesCount = i.iso3Codes.length,
u.foundCountriesFlag = !0
}