infinite scroll wordpress using Jquery 403 error?

Hi Ia m budling an infinte scroll using only JS on wordpress

jQuery(function($) {
    var loader= $('.loader'),
    busy = false,
    i = 1;
     var offset = $("#i-scroll article:last").offset();
$(window).scroll( function() {
if ( ( (offset.top + $("#i-scroll article:last").height() ) - $(window).height() <=    $(window).scrollTop()  ) && busy === false
    ) {
       i++;// page number incrementation
       busy= true;
       loader.show();//show gif
       $.get( document.location.href + 'page/' + i )
       .done( function ( data ){
             loader.hide();//hiden gif
             $("#i-scroll article:last").after(  $('#i-scroll', data ).html() );
             //offset upto date
             offset = $("#i-scroll article:last").offset();
             busy=false;
       })
       .fail( function() {
               loader.hide();//hiden gif
             });
}
});

So this is what i have tried it works and call the correct page per the console but it says it has a 403 error event if the adresse is correct. to check it out for yoursels this is the bulding website location yves.geekarts.fr thanks for all the help in advance.