Update your admin panel

System Information
  • Strapi Version: 4.0.3
  • Operating System: OSX 11.3
  • Database: Postgres
  • Node Version: 14.16
  • NPM Version: 6.14

After upgrading to latest Strapi

// package.json
"@strapi/plugin-i18n": "^4.0.3",
"@strapi/plugin-users-permissions": "^4.0.3",
"@strapi/strapi": "^4.0.3",

I see the following in the admin panel:

Solution:
npm run build needs running, even in development mode