在db目录下的index.js里加入 require(’./Schemas/User’); 这句以后报错
src目录下的index.js里的db和routers的引入顺序已经调换过了 看了好久还是不知道哪里出错了 麻烦老师解答一下

[nodemon] restarting due to changes…
[nodemon] starting node src/index.js
H:\projects\blog\blog-be\src\db\helpers.js:5
default: (new Data()).getTime(),
^

ReferenceError: Data is not defined
at getMeta (H:\projects\blog\blog-be\src\db\helpers.js:5:27)
at Object. (H:\projects\blog\blog-be\src\db\Schemas\User.js:8:11) at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions…js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object. (H:\projects\blog\blog-be\src\db\index.js:1:1)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions…js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object. (H:\projects\blog\blog-be\src\index.js:2:21)
[nodemon] app crashed - waiting for file changes before starting…