yarn install 报错【There appears to be trouble with your network connection. Retrying...】解决方案（五种情况分析解决）

原因三：配置文件问题

解决三：

1.检查配置文件

yarn config list

2.手动更新配置文件

yarn config set registry 
npm config set registry 
npm config set disturl /dist
npm config set '/'

3.删除无用配置项

yarn config delete 配置项名
npm config delete 配置项名