无论我输入什么内容，控制台都会打印出这样的信息
F:\cmd>npm adduser
Username: lx9542
Password:
Email: (this IS public) lx1412@gmail.com
npm ERR! 200 Could not create user
npm ERR! {"ok":true,"id":"org.couchdb.user:lx9542","rev":"1-e3cdf675f7d7e69b8517
f3f96df274be","_etag":"\"1-e3cdf675f7d7e69b8517f3f96df274be\""}
npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2017-09-14T14_56_55_452Z-debug.log