DingTalkPC.ready 不执行

pc端 DingTalkPC.ready 不执行，源码如下< script>
     DingTalkPC. config({
         agentId: _config. agentId,
         corpId: _config. corpId,
         timeStamp: _config. timeStamp,
         nonceStr: _config. nonceStr,
         signature: _config. signature,
         jsApiList: [
             'runtime.permission.requestAuthCode',
             'device.notification.alert',
             'device.notification.confirm',
             'biz.contact.choose',
             'device.notification.prompt',
             'biz.ding.post'
        ],
    });
     DingTalkPC. userid = 0;

     DingTalkPC. ready( function (e) {
         logger. i( 'dd.ready rocks!');

         DingTalkPC. runtime. permission. requestAuthCode({
             corpId: _config. corpId, // [font='宋体']企业 ID
             onSuccess: function (info) {
                 /*{
                 code: 'hYLK98jkf0m' //string authCode
                 }*/
                 logger. i( 'authcode: ' + info. code);

            },
             onFail: function (err) {
                 logger. e( JSON. stringify(err));
            }

        });
    });

     DingTalkPC. error( function(err) {
         console. log(err);
         logger. e( 'dd error: ' + JSON. stringify(err));
    });
</ script>