linux下启动express项目报错，求解决?

Question

在centos7中，安装好node和express，将项目代码上传，启动出错。好像是少模块，但是使用npm install 安装那个模块还是报错。

[ws@VM_86_94_centos Online-retailers]$ npm start

ds@0.0.0 start /test/projrct/Online-retailers
node ./bin/www

module.js:471

throw err;
^

Error: Cannot find module 'async/each'

at Function.Module._resolveFilename (module.js:469:15)
at Function.Module._load (module.js:417:25)
at Module.require (module.js:497:17)
at require (internal/module.js:20:19)
at Object.<anonymous> (/test/projrct/Online-retailers/node_modules/_mongoose@4.11.7@mongoose/lib/schema.js:11:12)
at Module._compile (module.js:570:32)
at Object.Module._extensions..js (module.js:579:10)
at Module.load (module.js:487:32)
at tryModuleLoad (module.js:446:12)
at Function.Module._load (module.js:438:3)

npm ERR! Linux 3.10.0-327.el7.x86_64
npm ERR! argv "/usr/src/node-v6.11.2-linux-x64/bin/node" "/usr/bin/npm" "start"
npm ERR! node v6.11.2
npm ERR! npm v3.10.10
npm ERR! code ELIFECYCLE
npm ERR! ds@0.0.0 start: node ./bin/www
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the ds@0.0.0 start script 'node ./bin/www'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the ds package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node ./bin/www
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs ds
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls ds
npm ERR! There is likely additional logging output above.

npm ERR! Please include the following file with any support request:
npm ERR! /test/projrct/Online-retailers/npm-debug.log

Answer 1

1、安装依赖

npm install

ps: 如果你只是缺了async这个包，那就单独装上：

npm install --save async

2、启动应用

npm start