external site loading in fancybox

Question

When the following fancybox call is called on a button click, the page does not load, instead, the console shows a message like this. 'Refused to display '' in a frame because it set 'X-Frame-Options' to 'sameorigin' . It was loading without error previously.

Any help is appreciated.

$.fancybox.open({
    href            : thirdpartyUrl
    , type          : 'iframe'
    , maxHeight             : maxHeight
    , maxwidth      : maxwidth
    , width         : width
    , height        : height
    , autoSize      : autoSize
    , openEffect    : openEffect
    ,afterClose: function() {
        $('#loaderdiv').hide();
    }
    ,iframe: {
        scrolling : scrolling,
        preload   : true
    }
});