I am using Koolreport with Laravel, and everything is working fin but when I came to use DateRangePicker like below it's thrown exception. my code

<?php
    DateRangePicker::create(array(
        "name"=>"dateRange",
        "clientEvents"=>array(
            "change"=>"function(e){
              console.log(e.date);
              console.log(e.oldDate);
        }"),
    ));

and exception

ReferenceError: moment is not defined
    at new DateRangePicker
    at kool:1009
    at KoolReport.js:105
    at Array.forEach (<anonymous>)
    at Object.checkScriptsAndCallback (KoolReport.js:102)
    at Object.onScriptLoaded (KoolReport.js:88)

any help please?