dd.biz.util.scan调用后返回报错,能正常扫码，就是返回的时候会报错

dd.biz.util.scan({
   
            type: "all",
            onSuccess: function (data) {
   
              console.log("扫描二维码成功", data);
              // Toast('成功' + data)
              that.formInfo.projectNo = data.text
              that.checkProjectName = data.text
              Dialog.alert({
   
                title: '扫码成功',
                message: data.text,
                confirmButtonText: '确定'
              }).then(() => {
   
                // on close
              });

            },
            onFail: function (err) {
   
              console.log("扫描失败", err);
              Toast('退出扫描')
            },
          });