BrowserslistError: Unknown browser kaios : <p>I have updated my project to use the last versions of node and yarn, after this upgrade now my react project doesn't want to work with "browserslist". </p>

<p>I run "yarn start" and get this error:</p>

<pre><code>./src/assets/css/material-dashboard-react.css?v=1.2.0 (./node_modules/css-loader??ref--6-oneOf-3-1!./node_modules/postcss-loader/src??postcss!./src/assets/css/material-dashboard-react.css?v=1.2.0)
BrowserslistError: Unknown browser kaios
    at Array.reduce (&lt;anonymous&gt;)
    at Array.some (&lt;anonymous&gt;)
    at Array.filter (&lt;anonymous&gt;)
    at new Promise (&lt;anonymous&gt;)
</code></pre>

<p>I have the following versions:</p>

<ul>
<li>node v10.15.3</li>
<li>npm 6.9.0</li>
<li>yarn v1.15.2</li>
</ul>

<p>And my package.json its</p>

<pre><code>{
  "name": "frontend",
  "version": "0.1.0",
  "private": true,
  "dependencies": {
    "@material-ui/core": "3.9.3",
    "@material-ui/icons": "3.0.2",
    "axios": "0.18.0",
    "classnames": "2.2.6",
    "html2canvas": "^1.0.0-alpha.12",
    "immutable": "3.8.2",
    "jspdf": "^1.4.1",
    "jspdf-autotable": "^2.3.5",
    "moment": "2.22.2",
    "npm-run-all": "4.1.5",
    "perfect-scrollbar": "1.4.0",
    "plotly.js": "1.47.1",
    "react": "^16.6.3",
    "react-currency-format": "1.0.0",
    "react-dates": "18.2.2",
    "react-dom": "^16.6.3",
    "react-excel-workbook": "0.0.4",
    "react-google-maps": "9.4.5",
    "react-plotly.js": "2.3.0",
    "react-redux": "6.0.0",
    "react-router": "4.3.1",
    "react-router-dom": "4.3.1",
    "react-scripts": "2.1.8",
    "react-select": "2.1.2",
    "react-swipeable-views": "0.13.1",
    "redux": "4.0.1",
    "redux-immutable": "4.0.0",
    "redux-persist": "5.10.0",
    "redux-thunk": "2.3.0",
    "weather-icons": "^1.3.2"
  },
  "scripts": {
    "start": "react-scripts --max-old-space-size=8192 start",
    "build": "react-scripts build",
    "test": "react-scripts test --env=jsdom",
    "eject": "react-scripts eject"
  },
  "browserslist": [
    "&gt;1%",
    "not dead",
    "not ie &lt;= 11",
    "not op_mini all"
  ]
}
</code></pre>

<p>For me the issue it's related to css-loader, I try solving the issue and add css-loader@2.1.1 to the package.json. I try with other solution but no ones work.</p>
