【报Bug】在setTimeout中延迟调用uni.redirectTo报错

基于uniCloudAdmin改造，leftWindow.vue中如下代码

            clickMenuItem(url) {  
                // #ifdef H5  
                if (url.indexOf('http') === 0) {  
                    return window.open(url)  
                }  
                // #endif  
                // TODO 后续要调整  

                if (this.toSave > 0) {  
                    uni.showLoading({  
                        title: "正在保存记录..."  
                    })  
                }  
                let delay = this.toSave - new Date().getTime();  
                setTimeout(() => {  
                    uni.redirectTo({  
                        url: url,  
                        success: () => {  
                            // this.changeMenuActive(url)  
                        },  
                        fail: () => {  
                            uni.showModal({  
                                title: '提示',  
                                content: '页面 ' + url + ' 跳转失败',  
                                showCancel: false  
                            })  
                        }  
                    });  
                    uni.hideLoading();  
                }, delay > 0 ? delay + 1000 : 0)  
            },

运行后控制台报如下错误：
22:46:31.405 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.426 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.446 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.466 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.487 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.508 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.528 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.549 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.569 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.590 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.611 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.631 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.651 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.672 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.692 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.712 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.732 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.753 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.773 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.793 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.813 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.834 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.855 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.875 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1
22:46:31.895 cid unmatched [object Object] at view.umd.min.js:1
22:46:31.916 TypeError: Invalid attempt to destructure non-iterable instance.
22:46:31.936 In order to be iterable, non-array objects must have a [Symbol.iterator]() method. at view.umd.min.js:1

虽然不影响使用，但是很想知道为什么会这样。