yarn 报错There appears to be trouble with your network connection. Retrying

yarn超时

#查看代理
yarn config list
#删除代理
yarn config delete proxy
npm config rm proxy
npm config rm https-proxy
#安装好后更换淘宝镜像
yarn config set registry https://registry.npm.taobao.org

引自：
https://blog.csdn.net/m0_37859032/article/details/95921667

摘抄以备后患