Latest release can't be built

[sembrestels]

Describe the bug
The npm start script stops running with the latest aragon client commit.

To Reproduce
Steps to reproduce the behavior:

1. git clone https://github.com/1hive/aragon
2. npm install
3. npm start

Error message

> node scripts/start


aragonUI assets copied to public/aragon-ui
Server running at http://localhost:3000 
🚨  /home/sem/Projects/ac/src/index.js: Duplicate plugin/preset detected.
If you'd like to use two separate instances of a plugin,
they need separate names, e.g.

  plugins: [
    ['some-plugin', {}],
    ['some-plugin', {}, 'some unique name'],
  ]

Duplicates detected are:
[
  {
    "alias": "/home/sem/Projects/ac/node_modules/@babel/plugin-proposal-class-properties/lib/index.js",
    "dirname": "/home/sem/Projects/ac",
    "ownPass": false,
    "file": {
      "request": "@babel/plugin-proposal-class-properties",
      "resolved": "/home/sem/Projects/ac/node_modules/@babel/plugin-proposal-class-properties/lib/index.js"
    }
  },
  {
    "alias": "base$2",
    "options": {
      "loose": "#__internal__@babel/preset-env__prefer-false-but-true-is-ok-if-it-prevents-an-error"
    },
    "dirname": "/home/sem/Projects/ac",
    "ownPass": false
  }
]
If you'd like to use two separate instances of a plugin,
they need separate names, e.g.

  plugins: [
    ['some-plugin', {}],
    ['some-plugin', {}, 'some unique name'],
  ]

Duplicates detected are:
[
  {
    "alias": "/home/sem/Projects/ac/node_modules/@babel/plugin-proposal-class-properties/lib/index.js",
    "dirname": "/home/sem/Projects/ac",
    "ownPass": false,
    "file": {
      "request": "@babel/plugin-proposal-class-properties",
      "resolved": "/home/sem/Projects/ac/node_modules/@babel/plugin-proposal-class-properties/lib/index.js"
    }
  },
  {
    "alias": "base$2",
    "options": {
      "loose": "#__internal__@babel/preset-env__prefer-false-but-true-is-ok-if-it-prevents-an-error"
    },
    "dirname": "/home/sem/Projects/ac",
    "ownPass": false
  }
]
    at assertNoDuplicates (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-descriptors.js:206:13)
    at createDescriptors (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-descriptors.js:114:3)
    at createPluginDescriptors (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-descriptors.js:105:10)
    at alias (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-descriptors.js:63:53)
    at cachedFunction (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/caching.js:62:27)
    at cachedFunction.next (<anonymous>)
    at evaluateSync (/home/sem/Projects/ac/node_modules/gensync/index.js:251:28)
    at sync (/home/sem/Projects/ac/node_modules/gensync/index.js:89:14)
    at plugins.plugins (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-descriptors.js:28:77)
    at mergeChainOpts (/home/sem/Projects/ac/node_modules/@babel/core/lib/config/config-chain.js:415:26)

Desktop (please complete the following information):

• OS version: Ubuntu
• Node version: v10.23.0

Additional context

I think it has to do with an update of the babel dependency. I have seen the same error before, here.