Map is not displaying after uploading to website

[Qutab Alam]

Dear All

I am working on map, it is working on my local computer but when I uploaded it is giving me error, 

Unexpected end of JSON input(…)(anonymous function) 

below is the code:

var projection = d3.geo.mercator()
        .scale(1)
        .translate([0, 0]);

   vis.path = d3.geo.path()
        .projection(projection);


    d3.json("data/southsudan.json", function (error, data) {
        if(error) console.error(error);

       console.log(data);
        var southSudan = data.features;
        var b = vis.path.bounds(data),
            s = .95 / Math.max((b[1][0] - b[0][0]) / vis.width, (b[1][1] - b[0][1]) / 400),
            t = [( vis.width - s * (b[1][0] + b[0][0])) / 2, (400 - s * (b[1][1] + b[0][1])) / 2];

        projection.scale(s)
            .translate(t);

        var div = d3.select("body").append("div")
            .attr("class", "tooltip")
            .style("opacity", 0);

        vis.svg.selectAll("path.map-country")
            .data(southSudan)
            .enter()
            .append('path')
            .attr('d', vis.path)

Please if some body can help me with this.

best regards

Qutab