Strapi v4 Heroku deployment error R10 failed to bind to $PORT within 60 seconds of launch

Questions and Answers
10

@cHaNDaN_S_s This worked for me for ./config/env/production/server.js

module.exports = ({ env }) => ({
  proxy: true,
  host: "0.0.0.0",
  port: process.env.PORT,
  url: env('MY_HEROKU_URL'),
  app: { 
    keys: env.array('APP_KEYS')
  },
  admin: {
    auth: {
      secret: env('ADMIN_JWT_SECRET'),
    },
  },
})