Hello, I have a ajax in my localhost and is working good, but when I put it in the dopplet no is working. Any block? I must config anything more?

My ajax:

$.ajax({
          type: "post",
          url: url,
          data: {"_token": "{{ csrf_token() }}",
                  year: year, index: index
          },
          success: function(data) {

              $.each(data,function(key,value){
                var oBox=$('<div>').addClass('box').appendTo($('#gallery'));
                var oPic=$('<div>').addClass('pic').appendTo(oBox);
                $('<img>').attr('src', $(value).attr('src')).appendTo(oPic);
});

My Laravel controller:

public function gallery(Request $request)
    {
        $json = Photo::where('year', '=', $request->year)->skip(20 * $request->index)->take(20)->get();

        if (!$json->isEmpty()) {

            foreach ($json as $data)
            {
                $elements[] = ['src' => '../img/gallery/'.$data->year.'/'.$data->filename.'.'.$data->extension, 'download' => '../img/gallery/'.$data->year.'/download/'.$data->filename.'.'.$data->extension];
            }

                $json = response()->json($elements);
        }

        return $json;
    }