Missing 'Open the administration' button when running locally

General
3

hmm, not solved it
my server.js file is:

module.exports = ({ env }) => ({
  host: env('HOST', '0.0.0.0'),
  port: env.int('PORT', 1337),
  admin: {
  auth: {
      url: '/admin',
      secret: 'werhiui23783r78r373r7g37rg37rg37rg73grfeygey'
    },
  },
});

Still no button
and /admin gives me a 404