升级了Node.js的版本，在安装Gitbook的时候就直接报错了：
C:\Users\Administrator\AppData\Roaming\nvm\v14.19.0\node_modules\gitbook-cli\node_modules\npm\node_modules\graceful-fs\polyfills.js:if(cb)cb.apply(this,arguments)^TypeError:cb.applyisnotafunctionatC:\Users\Administrator\AppData\Roaming\nvm\v14.19.0\node_modules\gitbook-cli\node_modules\npm\node_modules\graceful-fs\polyfills.js::18atFSReqCallback.on