Adminlte: TypeError: $layout is undefined

[cataclysmuprising]

When clicking on FixedLayout or BoxedLayout of control-side bar's Layout Options , I saw the error log
TypeError: $layout is undefined
on firefox developer console. You can also check this on your demo application. How should I fix this ?

[mrjooz]

add $('body').layout() in demo.js

$('[data-toggle="push-menu"]').pushMenu()
$('[data-toggle="control-sidebar"]').controlSidebar()
$('body').layout()

var $pushMenu = $('[data-toggle="push-menu"]').data('lte.pushmenu')
var $controlSidebar = $('[data-toggle="control-sidebar"]').data('lte.controlsidebar')
var $layout = $('body').data('lte.layout')