关于server端 npm start报错

[ProEagle]

10 silly lifecycle 'cross-env NODE_ENV=production pm2 start app.js --node-args='--harmony' --name 'server'' ]
11 silly lifecycle server@1.0.0start: Returned: code: 1 signal: null
12 info lifecycle server@1.0.0start: Failed to exec start script

还是包没有安装上，我又全局安装了pm2包，后台服务成功启动
npm install -g pm2