Yarn在网络连接方面出现了问题。

今天早些时候，我尝试使用yarn安装一个软件包，但是遇到了以下问题

yarn install
yarn install v1.9.4
[1/4]   Resolving packages...
info There appears to be trouble with your network connection. Retrying...
info There appears to be trouble with your network connection. Retrying...
info There appears to be trouble with your network connection. Retrying...
info There appears to be trouble with your network connection. Retrying...
error An unexpected error occurred: "https://registry.yarnpkg.com/eslint: getaddrinfo ENOTFOUND     registry.yarnpkg.com registry.yarnpkg.com:443".
info If you think this is a bug, please open a bug report with the information provided in "/Users/daviddragovacz/Documents/GitHub/react-    project-one/dragi/yarn-error.log".
info Visit https://yarnpkg.com/en/docs/cli/install for documentation about this command.

有谁知道如何修复这个问题吗？ 我的网络似乎很好，一点也不慢。

我尝试了每个软件包都遇到了同样的问题。

package.json

{
    "name": "dragi",
    "version": "0.1.0",
    "private": true,
    "dependencies": {
        "axios": "^0.18.0",
        "prop-types": "^15.6.2",
        "react": "^16.4.2",
        "react-dom": "^16.4.2",
        "react-redux": "^5.0.7",
        "react-router": "^4.3.1",
        "react-router-dom": "^4.3.1",
        "react-scripts": "1.1.5",
        "redux": "^4.0.0",
        "redux-devtools-extension": "^2.13.5",
        "redux-thunk": "^2.3.0",
        "semantic-ui-css": "^2.3.3",
        "semantic-ui-react": "^0.82.3",
        "validator": "^10.7.0"
    },
    "scripts": {
        "start": "react-scripts start",
        "build": "react-scripts build",
        "test": "react-scripts test --env=jsdom",
        "eject": "react-scripts eject",
        "lint": "eslint src"
    },
    "devDependencies": {
        "eslint": "^5.5.0",
        "eslint-config-airbnb": "^17.1.0",
        "eslint-config-prettier": "^3.0.1",
        "eslint-plugin-import": "^2.14.0",
        "eslint-plugin-jsx-a11y": "^6.1.1",
        "eslint-plugin-prettier": "^2.6.2",
        "eslint-plugin-react": "^7.11.1",
        "prettier": "^1.14.2"
    },
    "proxy": "http://localhost:8080"
}

另外需要注意的是：npm i 可以正常工作，只有 yarn 会出现问题。