截止第7章,代码有部分copy了源码,但还是报错了,一个是:VM47 WAService.js:1 Uncaught (in promise) Error: errCode: -502005 database collection not exists | errMsg: [ResourceNotFound] Db or Table not exist. Please check your request, but if the problem cannot be solved, contact us.另一个是:VM47 WAService.js:1 Uncaught (in promise) Error: errCode: -404011 cloud function execution error | errMsg: cloud.callFunction:fail requestID , cloud function service error code -504002, error message Function not found: [login]; at cloud.callFunction api;主要是在处理历史播放记录时开始报错,点击歌曲会出现报错:Uncaught (in promise) TypeError: Cannot read property ‘length’ of undefined。之后把所有代码换成老师的源码,轮播图也开始消失,点击其他页面会闪过图片大小。