报错内容：
info There appears to be trouble with your network connection. Retrying...
尝试无果：
方法一：
npm config set registry https://registry.npm.taobao.org
npm config set disturl https://npm.taobao.org/dist
方法二：
yarn config get registry
# -> https://registry.yarnpkg.com
yarn config set registry https://registry.npm.taobao.org
# -> yarn config v0.15.0
# -> success Set "registry" to "https://registry.npm.taobao.org".
# -> Done in 0.04s.
***一定注意源地址不能带引号
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