npm ERR!code ETIMEOUT设置代理关闭:npm config set proxy false清除缓存:npm cache clean若报错则:npm cache clean --force降级npm版本:npm intsall npm@6.14.10 -g设置淘宝镜像:npm config set registry https://registry.npm.taobao.org或者尝试root权限启动npm:sudo npm install