这是什么错误？

[pyuany]

/Downloads/node-koa-master/src/error/ColumnTypeUndefinedError.ts:9 super(); ^ ColumnTypeUndefinedError: Column type for Tag#name is not defined and cannot be guessed. Make sure you have turned on an "emitDecoratorMetadata": true option in tsconfig.json. Also make sure you have imported "reflect-metadata" on top of the main entry file in your application (before any entity imported).If you are using JavaScript instead of TypeScript you must explicitly provide a column type. at new ColumnTypeUndefinedError (/Users/yuanpan/Downloads/node-koa-master/src/error/ColumnTypeUndefinedError.ts:9:9) at /Users/yuanpan/Downloads/node-koa-master/src/decorator/columns/Column.ts:119:23 at DecorateProperty (/Users/yuanpan/Downloads/node-koa-master/node_modules/reflect-metadata/Reflect.ts:1214:35) at Object.decorate (/Users/yuanpan/Downloads/node-koa-master/node_modules/reflect-metadata/Reflect.ts:737:24) at __decorate (/Users/yuanpan/Downloads/node-koa-master/src/model/tag.ts:9:92) at Object.<anonymous> (/Users/yuanpan/Downloads/node-koa-master/src/model/tag.ts:21:3) at Module._compile (internal/modules/cjs/loader.js:702:30) at Module.m._compile (/Users/yuanpan/Downloads/node-koa-master/node_modules/ts-node/src/index.ts:400:23) at Module._extensions..js (internal/modules/cjs/loader.js:713:10) at Object.require.extensions.(anonymous function) [as .ts] (/Users/yuanpan/Downloads/node-koa-master/node_modules/ts-node/src/index.ts:403:12) at Module.load (internal/modules/cjs/loader.js:612:32) at tryModuleLoad (internal/modules/cjs/loader.js:551:12) at Function.Module._load (internal/modules/cjs/loader.js:543:3) at Module.require (internal/modules/cjs/loader.js:650:17) at require (internal/modules/cjs/helpers.js:20:18) at Object.<anonymous> (/Users/yuanpan/Downloads/node-koa-master/src/controller/tag.ts:10:1) at Module._compile (internal/modules/cjs/loader.js:702:30) at Module.m._compile (/Users/yuanpan/Downloads/node-koa-master/node_modules/ts-node/src/index.ts:400:23) at Module._extensions..js (internal/modules/cjs/loader.js:713:10) at Object.require.extensions.(anonymous function) [as .ts] (/Users/yuanpan/Downloads/node-koa-master/node_modules/ts-node/src/index.ts:403:12) at Module.load (internal/modules/cjs/loader.js:612:32) at tryModuleLoad (internal/modules/cjs/loader.js:551:12)

[jkchao]

src/model/tag.ts 文件下，需要使用注释部分，不是注释的部分需要注释掉。

[pyuany]

好的 谢谢啦

[pyuany]

admin 这个错误呢