数据库数据中openid正常，权限为所有人可读，所有人可写，为什么还是无法更新成功？

数据库数据及权限

//上方为更新列表数据代码
        }).then(res => {
            var that = this
            wx.cloud.init()
            const db = wx.cloud.database()
            const taskList=db.collection('taskList')
            for (let index = 0; index < this.data.repeatDataList.length; index++) {
                //获取数据
                var id = this.data.repeatDataList[index]._id
                var week = this.getWeekByDate(this.data.repeatDataList[index].detailDate.split('-'))
                var needDate = this.getDateByWeek(week)
                //数据回传
                db.collection('taskList').doc('that.data.repeatDataList[index].id').update({
                    data:{
                        detailDate:needDate
                    },
                    success:function(res){
                        console.log(res)
                    },
                })
            }
        })

运行结果