{
  "dependencies": {
    "@formatjs/intl-relativetimeformat": "4.x",
    "intl": "1.x",
    "intl-locales-supported": "1.x",
    "react": "16.x",
    "react-dom": "16.x",
    "react-intl": "4.x",
    "react-router-dom": "5.x",
    "base-shell": "1.x"
  }
}

{
  "dependencies": {
    "@formatjs/intl-relativetimeformat": "7.x",
    "intl": "1.x",
    "intl-locales-supported": "1.x",
    "react": "16.x",
    "react-dom": "16.x",
    "react-intl": "5.x",
    "react-router-dom": "5.x",
    "base-shell": "1.x"
  }
}

Upgrade the dependency for CRA base-shell
Upgrade the dependency for CRA base-shell 

Upgrade the dependency for base-shell causing the error