Hightcharts Export Button Problem

I have installed HighChart per composer …

"minimum-stability": "dev",


"require": {


    "php": ">=5.4.0",


    "yiisoft/yii2": "*",


    "yiisoft/yii2-bootstrap": "*",


"kartik-v/yii2-widgets": "dev-master",


    "kartik-v/yii2-builder": "*",


    "yiisoft/yii2-swiftmailer": "*",


"yiisoft/yii2-jui": "*",


"miloschuman/yii2-highcharts-widget": "*"


},

and I have in my view I have included exporting.js

use miloschuman\highcharts\Highcharts;

echo Highcharts::widget([

‘options’ => [

    'scripts' => [


		 'modules/exporting.js',


		],


'credits' => ['enabled' => false],


'chart' =>['height'=>'700', 'spacingBottom'=>40],


	'colors'=>['#ff0000', '#0000ff', '#00ff00','#7cb5ec', '#434348', '#90ed7d', '#f7a35c', '#8085e9', '#f15c80', '#e4d354', '#8085e8', '#8d4653', '#91e8e1'],


  'plotOptions'=>['line'=>['connectNulls'=>false]],


  'title' => ['text' => '1st Stick Success Percentage'],


  'xAxis' => [


     'categories' => array_keys($categories)


  ],


  'yAxis' => [


     'title' => ['text' => 'Percentage']


  ],


  'series' => $data

]

]);

The export button does not appear and I can not determine what I’ve done wrong.

thanks