upload error code : 3

document.addEventListener("deviceready", onDeviceReady, false);

function onDeviceReady(){

    window.requestFileSystem(
     LocalFileSystem.PERSISTENT, 0, 
     function onFileSystemSuccess(fileSystem) {
         window.currentDir = fileSystem.root.fullPath;
         window.fileSystem = fileSystem;
     }, fail);

}

function existsFile(fileName){

    fileSystem.root.getFile(fileName, {


        }, 
        function(f){

            console.log(f);
             alert("file founded: " + f.toURI());
              showLink(f.toURI());
        },
        function(){
            window.confirm("would you like to download..?");
                downloadFile(fileName);

        })

}

function downloadFile(fileName) {
    var fileTransfer = new FileTransfer();

    fileTransfer.download("https://ddlvideos.s3.amazonaws.com/A%201.mp4", 
    currentDir+"/"+fileName,
       function(theFile) {
           alert("download complete: " + theFile.toURI());
           showLink(theFile.toURI());
       },
       function(error) {
        alert("download error source " + error.source);
        alert("download error target " + error.target);
        alert("upload error code: " + error.code);
       });
}