小编在一次更新完微信开发者工具之后就报错Page is not constructed because it is not found.一开始小编也挺纳闷的，报错信息如下：
报错1.Cannot read property 'init' of undefined;at App lifeCycleMethod onLaunch function
TypeError: Cannot read property 'init' of undefined
报错2:Uncaught TypeError: Cannot read property 'database' of undefined
报错3:Page is not constructed because it is not found.
报错信息1
报错信息3
后来发现是微信开发者工具更新之后兼容性问题，解决方法如下：
在app.josn文件中添加"cloud":true
如图：
解决办法
