how to remove fade issue in adminlte 2 modal

$(window).on('popstate', function() {
    $(".modal-backdrop").remove();
});

//setting callback function for 'hidden.bs.modal' event
$('#modal').on('hidden.bs.modal', function(){
  //remove the backdrop
  $('.modal-backdrop').remove();
})

$('modalId').modal('hide');

$('body').removeClass('modal-open');
$('.modal-backdrop').remove();